Resources for 45 Meters

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Open Question: For the data set of Z, T, and S below, the salinity of the water mass at 30 meters is 1.----- parts per thous?

For the data set of Z, T, and S below, the salinity of the water mass at 30 meters is 1.----- parts per thousand. Enter a numeric answer only. Z (m), T (deg C), S (ppt) 0, 15.6, 33.45 5, 15.6, 33.45 10, 15.6, 33.45 15, 15.6, 33.45 20, 15.1, 33.47 25, 14.8, 33.49 30, 14.2, 33.51 35, 13.6, 33.61 40, 12.4, 33.68 45, 11.8, 33.74 50, 10.3, 33.91 60, 8.3, 34.01 70, 8.2, 34.04 80, 8.2, 34.05 90, 8.1, 34.06 100, 8.1, 34.06 Please help me solve this! I have NO idea what to do....thank you!! more

Resolved Question: Will this Bluetooth Headset work on the PS3?

Nexxus Talknano PRO mini bluetooth headset: Specification: Bluetooth V2.0 + EDR (enhanced data rate) • Operating frequency: 2.4GHz – 2.48GHz unlicensed ISM band • Operating distance: up to 10 metres (class 2 output) • Weight: 7 grams • Dimensions: L33 x W10 x H15mm • Talk time: 4 hours • Standby time: Up to 140 hours • Operating temperature: -10 to 45 degrees • Battery: 3.6V rechargeable Li-polymer battery • Headset passkey: 0000 more

Resolved Question: I need help with this angles question?

A surveyor marked off a 162 m baseline MN on one side of a river. A tree on the other side of the river was noted as a landmark. From M the angle formed between the line of sight to the landmark and the baseline was measured to be 45°. From N, the angle formed between the line of sight to the landmark and the baseline was measured to be 66°. Assume the tree is located between M and N. Determine the distance from M to the tree to the nearest metre. more

Open Question: can some one help me with math helppppp???

1. Find the solution of y = 6x –4 for x = 6. A. (–40, 6) B. (6, 12) C. (6, 32) D. (6, ) 2. Find the solution of y = 3x –3 for x = 6. A. (6, 15) B. (6, ) C. (–21, 6) D. (6, 9) 3. The equation m = 0.3048f gives the relationship between meters, m, and feet, f. Express 4 feet in meters. Round your answer to the nearest thousandth. A. 13.123 meters B. 4.305 meters C. –0.9142 meter D. 1.219 meters 4. The equation m = 0.3048f gives the relationship between meters, m, and feet, f. Express 28 feet in meters. Round your answer to the nearest thousandth. A. 8.534 meters B. 91.864 meters C. –8.2292 meters D. 28.305 meters 5. Dennis takes care of private swimming pools. He charges $35 to travel to a home and then $45 per hour. The equation t = 35 + 45h models the total charge, t, for hours of service, h. Which ordered pair (h, t) is NOT a solution for the equation? A. (5, 260) B. (6, 305) C. (3, 170) D. (9, 360) 6. Dennis takes care of private swimming pools. He charges $25 to travel to a home and then $35 per hour. The equation t = 25 + 35h models the total charge, t, for hours of service, h. Which ordered pair (h, t) is NOT a solution for the equation? A. (9, 340) B. (10, 375) C. (8, 305) D. (2, 85) 7. Which ordered pair is a solution of the equation 30x + 40 = y? A. (4, 135) B. (10, 332) C. (2, 100) D. (5, 230) 8. Which ordered pair is a solution of the equation 30x + 20 = y? A. (7, 230) B. (6, 192) C. (2, 70) D. (3, 85) 9. The equation a = 640s gives the relationship between square miles, s, and acres, a. Rita owns 2880 acres of farmland. How many square miles does she own? A. 0.7 square miles B. 4.5 square miles C. 7.03 square miles D. 288 square miles 10. The equation a = 640s gives the relationship between square miles, s, and acres, a. Tito owns 3.5 square miles of farmland. How many acres does he own? A. 224 acres B. 2240 acres C. 5.47 acres D. 0.55 acres more

Open Question: Could anyone answer this maths question, please!!?

The length of a ladder, L, is measured at 6.45 metres, correct to the nearest cm. The ladder leans against a wall and reaches to a height, h, of 5 metres, measured to the nearest cm. The angle of inclination,a, of the ladder to the horizontal ground can be found using the formula:- sin a= H/L Work out the upper bound of the value of sin a. Give your answer to an appropriate degree of accuracy. ___________________________________ I've seriously been slaving away at these maths GCSE questions for 3.5 hours now. Can anyone please help me with this?! Thank you SO, SO much if you can! more

Open Question: help with physics with torque?

The mass m1 is 0.56 kg and it is located at x1 = 30 cm. The pivot point is represented by the solid triangle located at x = 45 cm. The mass of the meter stick (mms = 0.40 kg) is located at its geometric center, xms = 50 cm. The mass m2 is 0.27 kg and it is located at x2 = 80 cm. Calculate the net torque (in N⋅m with the proper sign) due to these three weights. Use g = 9.8 m/s2 how do i solve this? thanks! 10 points to best answer more

Resolved Question: Where is the COM of the person (measured from the left edge) and what is the mass of the person?

Let's us a simple model of a Wii Fit balance board with two force meters, one at the left edge and one at the right edge. The width of the board is 0.45 meters. If the left sensor reads F1 = 300 N and the right sensor reads F2 = 325 N. Where is the COM of the person (measured from the left edge) and what is the mass of the person? more

Resolved Question: Four triangle questions I need some help with? Please just take a look?

I just don't really know how to figure these out. They really confuse me. I would even appreciate help with one or two of them if you can't help out with all of them. 1. The angle of elevation to the top of a tree from a point on the ground that is level with the bottom of the tree is 48.0°. From a point 19 m further from the first location that is in line with the base of the tree, the angle of elevation to the top of the tree is 28.8°. Determine the distance from the base of the tree to the first location. Round your answer to two decimal places. 2. A communications satellite sends signals to receiving towers A and B. It is determined from radio signals that the angle of elevation of the satellite from tower A is 81.8° and the angle of elevation from tower B is 83.6°. If A and B are 1164 km apart, how far is the satellite from tower B? (Ignore the curvature of the earth, and assume the satellite is located between the two towers.) Express your answer to the nearest kilometre. 3. A surveyor marked off a 162 m baseline MN on one side of a river. A tree on the other side of the river was noted as a landmark. From M the angle formed between the line of sight to the landmark and the baseline was measured to be 45°. From N, the angle formed between the line of sight to the landmark and the baseline was measured to be 66°. Assume the tree is located between M and N. Determine the distance from M to the tree to the nearest metre. 4. A piece of land is in the shape of a triangle. The sides measure 514.09 m, 556.44 m, and 893.00 m. Determine the value of the largest angle in the triangle. more

Resolved Question: Physics problem (conservation of energy)?

how would i go about solving the following problem? A 1000 Kg roller coaster car is raised to a height of 30 meters at the start of a ride. The reference line for PE is the ground. The roller coaster car is initially at rest then starts down the first incline until it reaches a point at the same level as the grounds. The average force of friction on the coaster wheels is 1/5 of the cars weight and if the car travels a total distance of 45 meters, what is the car’s velocity at the bottom of the ramp?Ahh thanks, totally forgot about W=FD more

Resolved Question: Please help me with finding then unknowns in F = m * (a^2)?

F = 255 pound-force feet or 0.35 kiloNewton-meters m = 45.4 Kilograms a = ??? Please solve for a and explain KiloNewton Meters and what mesurement the speed is in (i.e. what is the miles per hour). Thanks!!! more

Resolved Question: Physics question- help finding the weight of an object.?

The largest turtle ever caught in the United States had a mass of over 800 kg. Suppose this turtle were raised 5.45 meters onto the deck of a research ship. If it takes 46000 J of work to lift the turtle this distance at a constant velocity, calculate the turtle's weight. more

Voting Question: An Eccentric Professor Physics Problem?

Realizing that she often doesn't have her students' full attention during class, a professor devises an elaborate device on which to stand while she lectures. The pulley is placed so that the string makes a 45.0-degree angle with the beam. The beam is uniform, 5.00 meters long, and has weight . The professor stands 2.00 meters from the pivot point and has weight . http://session.masteringphysics.com/problemAsset/1004608/19/183441A.jpgFind the tension in the rope in terms of the professor's weight and the weight of the beamBeam's weight is W_b and the professor's is W_p more

Voting Question: can someone solve this for me (math)?

A diver, who can be considered as a particle of mass 68.45 kg, jumps upwards off the diving board with an initial speed of 6.19 m s-1, and travels in a vertical line before entering the water 9.17 metres below the diving board. Air resistance can be ignored. Calculate the speed, in m s-1, of the diver just before entering the water. Give your answer to 3 decimal places. Assume g = 9.81 ms-2. more

Resolved Question: Projectile motion physics help?

In a football game, a quarterback passed a ball to a receiver while running at 1.5 m/s forward. The ball was released at a height of 2.5 meters with an angle of 45 degrees and an initial velocity of 20 m/s. The receiver ran from behind to catch the ball at a height of 2 m. a)Find the range or distance traveled by the ball. b)Find the initial distance between the receiver and the quarterback, if the receiver ran at constant velocity of 7 m/s to catch the ball. Assume he started running at the same time as the ball was thrown. c)Find the final velocity of the ball and its direction. more

Resolved Question: some one please help me with these.?

A cylindrical drum has a diameter of 3 feet and a volume of 45 cubic feet. What is the height of the drum? (Hint: Use V = пr2h) The area of a circle is 28 square meters. What is its circumference? (Use п = 3.14. Hint: Area of Circle: A = пr2 and Circumference of Circle: C = 2пr) I'm so frustrated! more

Resolved Question: can you help? Sine and Cosine rules and triangle area.?

** In KLM given k + l + m = 150 cm. K=42° and L=120°. Please help me to find the length of sides k,l, and m. *** Anton stands in the front of a tower. He looks at the top of the tower with an elevation angle sized 45°. Then he walks 150 meters approaching to the tower and he looks at the top of the tower with an elevation angle sized 80°. If the height of Anton's eyes and the ground is 160 meters,please help me to find the height of the tower. more

Voting Question: speed calculations blah its easy but stupid ppl like me get confuzed?

A car travels 300m in 15 sec. What is its speed in m/s ( which means meters per second) A tractor is travelling at 18 km/h. It needs to go 15 km. How long does this take? A bicyclist goes 19 kilometers in 45 minutes. What is the speed? A delivery truck is moving at 12 km/h. How many minutes will it take to travel a 1/2 KM? On a motorway, a car is travelling at 28 m/s. If the track is 1 km long, WILL THE CAR COMPLETE THE COURSE IN ONE MINUTE? more

Resolved Question: making a newton meter?

I have to make a newton meter for homework. I have a spring and get things from a shop if i need to but would rather use household items. Please could you say what you need and step by step instructions. Oh and i have a week, but i would like to spend under 45 mins if possible. Thanks so much xNewtons - the force more

Resolved Question: please some math help? thank you?

Crystal earns $5.50 per hour mowing lawns. Write a rule to describe how the amount of money m earned is a function of the number of hours h spent mowing lawns. How much does Crystal earn if she works 3 hours and 45 minutes? Crystal earns approximately $ for working 3 hours and 45 minutes. A zucchini plant in Darnell's garden was 10 centimeters tall when it was first planted. Since then, it has grown approximately 0.5 centimeters per day. Write a rule to describe the function. After how many days will the zucchini plant be 0.185 meters tall? The zucchini plant will be 0.185 meters tall after days. A computer consultant is thinking of renting office space in a building that charges $28 per square foot per month for office space. She estimates that electricity, telephone, and supplies will cost $500 per month. Define variables and write an equation that describes the consultant's monthly office expenses. What is the greatest amount of space she can afford if she wants to spend no more than $4000 a month on rent and other expenses? The most she can afford is square feet of office space. more

Resolved Question: Can somebody help me with a mechanics initial velocity problem?

How do I solve this problem without time? 1. The problem statement, all variables and given/known data A grasshopper jumps 1.00 m from rest, with an initial velocity at a 45.0 degree angle with respect to the horizontal. Find a. the initial speed of the grasshopper (the answer is 3.13 m/s) and b. the maximum height reached ( the answer is .250 meters). 2. Relevant equations V naught of x= v naught (hyp. of v. vectors) times cos (projection angle) It should all be derived from the basic mechanic equations; V= vnaught times time + a times time Delta x= vnaught times time + .5 a times time squared v squared= v naught squared + 2a delta x I suspect they want me to use the cosine and sine versions but I need the steps so I can truly understand what I'm looking for! 3. The attempt at a solution I keep getting zero I don't understand Can somebody please give me a step by step answer for this problem and what formulas I am missing? I can crunch the numbers but for some reason I have a mental block on this problem. I don't even get how if it starts at rest, it can have any other value but zero. more

Resolved Question: Could i be an NFL Player?

Ok i'm only 14 turning 15 soon. Now i'm about 5 foot 6 inches and way about 65kilos about 143 pounds. I can kick and AFL ball about 40 - 45 meters. I can run at about the average speed. I am predicted to grow no taller then 6 foot 1 inches. I am of (Greek) Cypriot and British decent. If i use weights and exercise i know that i will have very big shoulders. I will have the same sort of body type as scott steiner TNA Wrestler only less muscle when i'm 21 or 22. What are my chances i know that the NFL like to search for Aussie Rules footy players because of there style of kick. What positions would i be what pay would i receive and what team would most likely pick me both right now and in your future prediction. What is my likely hood of being a walk on tryout player for a college team and or the nfl. Also i want to be a plumber what college or university should i attend that has a good well known football team. This is a question please tell me first my likely hood of being picked and answer my questions no sarcasm. Any additional info welcomed.I do have an idea of what position i know i would fit in the kicker or punter position but i wanted your perspective on it.I want to know how i could do a sav rocca or a ben graham story. more

Resolved Question: special right triangles help plz?

45-45-90 find the perimeter with diagonal 28 meters 30-60-90 The long leg is 9 square root of 3. what is the measure of the short leg and the hypotenuse? one last one...... perimeter of equilateral triangle is 32cm. find the length of the altitude of the triangle? thannks so much more

Voting Question: Help with science, pleasee?

A pump drains a small pond by preforming 120,000 Joules of work. The power rating of the pump is 1000 Watts. How long does it take for the pump to drain the pond? A tow truck pulls a car out of a ditch in 6.5 seconds. If 6000 Watts of power is used, how much work if performed by the truck? An elevator lifts 5 passengers 30 Meters in 24 seconds. The power is 15,000 Watts. What is the total weight of the elevator and the passengers? A bulldozer performs 80,000 Newtons-m of work pushing dirt a distance of 16 meters. What is the force of the dirt? An ant does 1 Newtons-m of work in dragging a 0.0020-Newton grain of sugar. How far does the ant drag the sugar? You are walking from your math class to your science class. You are carrying books that weigh 20 Newtons. You walk 45 Meters down the hall, climb 15 meters up the stairs, and then walk another 30 meters to your science class. What is the total work performed on your books? more

Voting Question: Enlisting Air Force PARARESCUE?

I want to do PARARESCUE in the Air Force. Here are some questions I have, What can I do to get myself in shape for the training? I am not by any means OUT of shape but I hear that PR is one of the most difficult programs to get into. That is partially why I want to do it. Here are the requirements 2x20 Meter Swim 500m Surface Swim 14 mins 1.5 Mile run 10:45 6 pull ups 1 Min 45 SitUps 2 Min 45 PushUps 2 Min 45 FlutterKicks 2 Min I have read in various places that if you fail out of PR that the AirForce Randomly assigns you somewhere that they need you. I really am not thrilled about that so I was wondering as a plan B. If I could enlist as some other Medical MOS (Medical is something I really want to do, which is why ParaRescue interested me so much) and then at a certain point in my career decide to go the Para Rescue route? That way if I do not pass I would just go back to my old MOS. Thank You all in advance.I scored a 90 on my ASVAB. more

Voting Question: help please Physics Homework?

A child, standing 5.00 meters from a building kicks a ball toward the building. The ball has an initial velocity of 11.45 at an angle of 40.0o with the horizontal ground. (a) At what height above the ground does the ball hit the wall? more

Voting Question: In some military applications, angles are measured in mils..?

The arc length cut along a circle of radius 1000 meters by a 1 mil central angle approximately 1 meter. How many mils are in a 45 degree angle? more

Resolved Question: HELPPPPPPP????????????????????????? MATH PROBLEM?

A ski jumper leaves the end of his ski jump headed upward along a parabolic trajectory. He reaches his peak height 10 meters beyond the end (horizontal distance) and ten meters above it (vertical distance). The ski slope falls away from his departure point in a straight line 45 degrees below the horizontal. Measuring down the slope, how far from the end of the jump does the skier contact the surface? more

Resolved Question: HELLLLPPPPPPPP??? MATH PROBLEM??? 10 points!?

Resolved Question: I need help with the following physics Problems!?

1. Two roller skaters stand facing each other. One of their masses is 80 kg, the other is 72 kg. If they both push each other at the same time, what happens to their momentum? A. The lighter skater has a higher momentum. B. The heavier skater has a higher momentum. C. Their momenta are equal but opposite. D. The lighter skater has a higher velocity 2. A passenger on a bus traveling west sees a man standing on a curb. From the passengers perspective the man appears to be… A. Standing still. B. Moving to the East at a speed greater than the bus. C. Moving East at a speed equal to the bus. D. Moving west at a speed equal to the bus. 3. A snowmobile with a mass of 500 kg is moving 40 m/s in the Alaskan wilderness. Suddenly a Caribou galloped into the track of the snowmobile. Fearing for his life the driver applied the brakes to the snowmobile with a force of 235 N. How long does it take the sled to come to a complete stop? A. 120 seconds B. 85 seconds C. 76 seconds D. 8.5 seconds 4. What is the tangential speed of a boy on a Ferris wheel a distance of 10 meters from the center when he moves 3 radians in 15 seconds? A. 0.5 m/s B. 1 m/s C. 2 m/s D. 4.5 m/s E. 450 m/s 5. A 50.0 N crate starts at rest and slides down a 10.0 m long ramp inclined at 40.0° to the horizontal. The force of friction between the crate and the ramp is 9.0 N. What is the net force (in N)? A. 23 N B. 46 N C. 29 N D. 41 N 6. A wakeboarder with a mass of 60 kg is accelerated across a smooth lake at 1.5 m/s2. What net force acts on the wakeboarder horizontally? A. 3 N B. 90 N C. 75 N D. 0.03 N 7. A free body diagram of a ball falling in the presence of air resistance would show A. Only a downward arrow to represent the force of air resistance. B. Only a downward arrow to represent the force of gravity. C. A downward arrow to represent the force of gravity and an upward arrow to represent the force of air resistance. D. An upward arrow to represent the force of gravity and a downward arrow to represent air resistance. 8. The length of a force vector represents the A. Cause of force B. Direction of force C. Magnitude of force D. Type of force 9. A boat having a mass of 30 kg is accelerated across a level road at 2.0 m/s2. What net force acts on the boat horizontally? A. 15 N B. 10 N C. 60 N D. 32 N 10. A hiker travels south along a straight path for 1.5 hours with an average velocity of .75 km/h, and then travels south for 2.5 hours with an average velocity of .90 km/h. What is the hiker’s displacement for the total trip? A. 2.5 km to the south B. 2.2 km to the south C. 3.4 km to the south D. 4.0 km to the south 11. A rock is thrown up from the top of a cliff with an initial speed of 2.0 m/s. If it hits the ground after 2.0 seconds, what is the height of the cliff? (disregard air resistance) A. 6 m B. 15.6 m C. 22.6 m D. 34 m 12. A car starts traveling 10 km from EHS, 2 minutes later it is 16 km from the school and 5 minutes later it is 25 km away. What is the car’s displacement in the first 2 minutes? A.16 km B. 6 km C. 25 km D. 15 km 13. An athlete runs 110 m across a level field at an angle of 30 degrees north of east. What are the east and north components of her displacement, respectively? A. 55 m, 95 m B. 190 m, 64 m C. 64 m, 190 m D. 95 m, 55 m 14. A car travels 15 km during the first half hour, and then travels 45 km in the second half hour of the trip. The average velocity for the trip is (in km/hr)……. A. 60 km/hr B. 70 km/hr C. 30 km/hr D. 50 km/hr 15. Which item does not represent circular motion? The earth’s orbit around the sun. B, The Ferris Wheel as it moves with riders. C. A bicycle tire going down hill. D. A car sliding down a hill after being rolled. E. A battleship circling. 16. If two teams are playing tug-of-war, a rope is pulled by a force of 80 N to the left and by a force of 70 N to the right. What is the magnitude and direction of the net horizontal force on the rope? A. 10 N to the right B. 150 N to the right C. 10 N to the left D. 150 N to the left 17. Centripetal Acceleration. A girl sits on a tire that is attach to a tree and her father pushes her with a tangential speed of 4.8 m/s, and she travels in a horizontal circle 8m. What is the centripetal acceleration of the girl? A. 5.76 m/s2 B. 92.16 m/s2 C. 38.4 m/s2 D. 19.2 m/s2 18. A Rufous Hummingbird flies with a constant velocity of 10 m/s. What is its acceleration? A. 20 m/s2 B. 10 m/s2 more

Voting Question: Tension question for physics?

Realizing that she often doesn't have her students' full attention during class, a professor devises an elaborate device on which to stand while she lectures. The pulley is placed so that the string makes a 45.0-degree angle with the beam. The beam is uniform, 5.00 meters long, and has weight w_b. The professor stands 2.00 meters from the pivot point and has weight w_p. Can someone explain how I would find the tension in the rope? more

Resolved Question: Blood glucose level is 64, only 2 hours and 45 minutes after eating. Is that bad/too low?

I'm 21 years old, 165 lbs. I've been having symptoms of hypoglycemia for a few years: my insides feel shaky, fast heart beat, and sweating. My doctor finally gave me a glucose meter to test myself when I have shaky episodes, even though my glucose tolerance test was negative. She didn't tell me what the normal values were. Is 64 on the low end? more

Voting Question: Geology problems!! can someone do these problems?? im suffeeeringgggg!!!!?

1) In the 1800’s it was recognized that temperatures in mines and caves increased with depth. Listed below are some measurements taken in a deep mine. Assume steady-state equilibrium, and a) Graph the temperature versus depth on a sheet of graph paper. b) Draw the best-fit straight line through your points and determine the thermal gradient from the slope. c) Determine the average thermal conductivity from the values given. d) Use the results from (b) and (c) to determine the heat flux through the surface in this region. e) Convert the result from (d) into calories/(cm2 – sec) and also into HFU. Depth Temperature Conductivity (km) (°C) (Watts/(m-°C)) 0.0 11.0 2.45 1.0 36.0 2.52 2.0 61.5 2.49 3.0 85.5 2.60 4.0 110.0 2.58 Conversions: 1 Watt = 1 Joule/sec 1 calorie = 4.2 Joules 1 HFU = 10-6 calories/(cm2 – sec) 2. Use the heat equation to find an expression relating temperature to depth within Earth. Assuming a steady-state equilibrium (no change with respect to time), ∂T/∂t = 0, so the heat equation becomes 0 = k(d2T/dz2) + ρH. Given that we know the heat flux (q = -qs) through the Earth’s surface and the temperature (Ts) at the surface as well, a) Integrate the heat equation with respect to z to determine the heat flow as a function of depth. Recall that you will need to use the surface heat flux to solve for the constant of integration. b) Integrate the result from (a) to determine the relation of temperature with depth inside the Earth to show that T(z) = Ts + (qs/k)z – (ρH/2k)y2. Again, you will need the surface temperature to evaluate the constant of integration. c) Use qs = 70 mW/m2, ρ = 3 g/cm3, H = 10-10 W/kg, K = 4 W/(m °C), and Ts = 10°C to determine the temperature profile of the upper 200 km within the Earth. Plot these points (use temperatures at depths of 50, 100, 150, and 200 km) on a sheet of graph paper. d) Also sketch on the graph paper a typical solidus and liquidus for mantle rock. i) Determine the depth (according to your results in #c) where the mantle should start to melt. ii) Does this depth correspond with any other observational attribute of the mantle? iii) At what depth should the mantle be entirely liquid? iv) What real-world observations tell us that the mantle does not actually heat up to such temperatures? v) How is such melting prevented by the mantle? e) Using the parameters listed in part (c), find the temperature in the crust at a depth of 50 km by varying your assumption about the heat generation in crustal rocks: i) assume H = 0 (i.e., no heat is generated in the rock). ii) assume H = 10-9 W/kg. 3) For a planet with a radius a and a surface temperature of 0°C, the temperature as a function of radius is given by T(r) = ρH(a2 – r2) / (6k) Where ρ is density, H is heat production, and K is thermal conductivity. a) Show that this solution satisfies the heat equation for a spherical planet 0 = (k/r2) d/dr [r2(dT/dr)] + Hρ. b) Assuming that k = 4 W/(m °C), H = 10-10 W/kg, and ρ = 5.5 g/cm3, find the temperature at the centers of planets with radii of 10 km, 100 km, and 1000 km (be careful with units!). 4) From the heat equation, we find that the time t needed for heat to conduct a distance y is given by y ≈ √κt, where κ is the thermal diffusivity. Assume that κ = 10-6 m2/s. Find the conductive cooling time (in years) for material of thickness a) 1 meter. b) 1 kilometer. c) 6000 kilometers. The last time is approximately the time needed for the Earth to cool down by conduction alone. How does it compare to the age of the Earth? 5) Estimate the total energy in ergs/year flowing through Earth’s interior, assuming a surface heat flow of 2 HFU (1 HFU = 4.184 x 10-2 W/m2). Compare this to the total annual energy per year from solar radiation, assuming an incident solar flux at the Earth’s orbit of 1.366 x 103 W/m2. 6) Determine the Rayleigh number as a function of ΔT for a solid mantle. Use the following physical parameters: α = 2 x 10-5 °C-1 g = 10 m/s2, ρ = 3500 kg/m3, κ = 10-6 m2/s, and η = 1021 kg/m⋅s. Under what conditions would you expect the solid rock in the mantle to convect? more

Resolved Question: Homework Help! Sides of a Right triangle!?

I need to know if I did 3 questions correctly. There is a triangle with 90/30/60 angles and the side opposite to 60 degree angle is 6 meters. Is the hypotenuse 9 (square root symbol) 2? There is a triangle with angles 90/45/45 with one side opposite to 45 7 meters. what is the hypotenuse? I have a triangle with 90/60/30 degree angles with the side opposite to 30 15. What is the measure of the side opposite to 60? I got 30 (square root sign) 1 more

Resolved Question: Sides of a Right Triangle?

Resolved Question: Help with word problems. easy ten points:)?

if you could explain how you got your answer and give me your answer i would be most thankful =) 44)A rooms length is 3 feet less then twice its width. The area of the room is 135 sq ft. what are the rooms dimensions? 45) A rug 4 meters by 5 meters covers 2/3 of the floor in a room. the rug touches two walls, leaving a strip of uniform width around the other two walls. how wide is the strip? more

Resolved Question: gravitational force problem?

(a) What is the gravitational force acting between Dave with a mass of 80 kg and Sally with a mass of 55 kg when they are standing 1.20 meters apart? i used the equation g= mass1mass2/r squared but my answer was wrong... (b) Dave and Sally now get a bit closer. What is their gravitational attraction when they are 0.20 meters apart? (c) How much more is the attractive force when they are closer? ____times greater. G = 6.67 x 10-11 Nm2/kg2. Enter your answer in the form of 1.23e-45. This is equivalent to 1.23 x 10-45 does anyone know how to do these? thanks! more

Voting Question: please help these questions are hard algebra 2?

Please help these questions are hard Q3) RETAIL DISPLAYS You work in a grocery store and you are stacking apples in the shape of a square pyramid with 5 layers. How many apples are in the stack? There are apples in the stack Q4)Suppose you randomly choose a number between 1 and 20.What are the odds in favor of choosing a prime number? Q5) Find the range of the numbers below. 39, 42, 57, 64, 46, 39, 54, 50 Q6) Determine a rule for the nth term of the sequence. Then find a17. 86, 82, 78, 74, 70 ... a17 =? Q7) Use the counting principle to determine the number of possible outfits that can be made using 1 of each type of item from the articles of clothing listed. 13 shirts and 5 pairs of pants Q8) The top finishing times (in seconds) for runners in amen's 400 meter dash are listed below. Compare the spread of the data with that of the finishing times for a 100 meter dash using the range. A (400 meter dash): 41.3, 41.63, 40.27, 40.15, 40.44, 43.21,45.77, 40.02, 53.53, 47.11 B (100 meter dash): 11.42, 11.78, 11.54, 11.25, 11.05, 11.7,11.88, 11.98, 10.57, 11.31 The range of the 400 meter dash is than the 100 meter dash. Q9) Two terms of an arithmetic sequence are a8 = 76 and a28 =296. Find a rule for the nth term Q10) You have 8 posters to hang in your room. You want to hang the posters as a border around the walls of your room. How many ways can you arrange the posters? more

Resolved Question: A mountain climber jumps a 2.4 meters wide crevasse by leaping horizontally with a speed of 7.8 m/s.?

If the climber's direction of motion on landing is -45 degrees, what is the height difference between the two sides of the crevasse? more

Resolved Question: What is the ideal size horse/pony for me?

I may start loaning a horse/pony I need to know what area of size should be looking out for. I weigh about 6 stone, and I'm 45 metres tall. (And yeah, I AM one of the smaller people in my class) PLEASE HELP!!!!!!!Sorry! I meant 145cm more

Resolved Question: PHYSICS QUESTION HELP NEEDED! PLEASE?

at time t the position of a body moving along the s axis s = t^3 - 6t^2 + 9t a. find the bodys acceleration each time the velocity is zero b. find the bodys speed each time the acceleration is zero c. find the total distance traveled by the body from t = 0 to t =2 2. at time t greater than equal to 0 the velocity of a body moving along the horizontal s axis is v = t^2 - 4t +3 a. find the bodys acceleration each time the velocity is zero b. when is the body moving forward? backward? when is the bodys velocity increasing? decreasing? 3. the equations for free fall at the surfaces of mars and jupiter ( s in meters t in seconds) are s= 1.86t^2 on mars and s = 11.44t^2 on jupiter. how long does it take a rock falling from rest to reach a velocity of 27.8 m/sec on each planet? 4. explorers on a small airless planet used a spring gun to launch a ball bearing vertically upward from the surface at a launch velocity of 15 m/sec because the acceleration of gravvity at the planets surface was gs m/sec^2 the explorers expected the ball bearing to reach a height of s = 15t - (1/2)gs t^2 m t sec later. the ball bearing reached its maximum height 20 sec after being launched. what was the value gs? 5. a 45 caliber bullet shot straight up from the surface of the moon would reach a height of s =832t - 2.6t^2 ft after t sec. on earth in the absence of air its height would be s= 832t -16t^2 ft after t sec. how long will the bullet be aloft in each case? how high will the bullet go? more

Resolved Question: question about length of shadow versus height?

i have this problem to solve, and i'm not sure if my answer (75) is correct. can anyone help? if a girl 1.2 meters tall casts a shadow 2 meters long, what is the length of the shadow cast by a tree that is 45 meters tall? more

Resolved Question: difficult physics question?

A group of students observes that a wooden block of mass 0.45 kg on a string makes 15 rotations in 25.5 seconds at a radius of 0.70 meters. Determine: The block's speed more

Resolved Question: How can I draw a really nice Family Tree?

I want to draw a really nice family tree with lots of embellishments and the little branch thingies with the little flowers. The only problem is that it goes back around 45 generations and its around two metres wide. How can I draw it and keep it looking good? more

Voting Question: how do you solve this projectile problem?

A pitched ball is hit by a batter at a 45 degree angle and it just clears the outfield fence 98 meters away. Assume that the fence is the same height as the pitch. Find the velocity of the ball when it left the bat. Disregard air resistance, wind, etc. more

Resolved Question: what are the answers to these problems?

change 15 quarts to gallons change 40 kilometers per hour to meters per hour. change 45 miles per hour to feet per second. A 9 cm cube is built from small cubes, each 1 cm on a side. Compare the indicated measures of the large cube and the small cube They are the side lenghts the surfacr areas and the volumes. Dina earned $28 for working 2 hours. At the asme rate of pay, how many hours must she work to earn $49. The ratio of the lenght of arectangular field to its width is 10:7. If the width of the field is 70 meters, find the perimeter of the field. A company sells snack-size boxes of raisins with dimensions 5in. by 2.5 in. by 1.5in./ each weighting 2 oz. They want to make a family- size box that would be 7.5in. by 3.75in. by 2.25in. What would be the weight of the family-size box of raisins. more

Resolved Question: "I need to plan an allotment which measures 45 metres by 5 metres, What is a website or plan that can do this?

Resolved Question: Can any one tell me how to find the answer to these algebra problems?

I have been working on these problems for 2 days and cant seem to get it right. I have even look for help on many different web sites. I am very frustrated! I just do not understand how to figure the answer...Please Help!!! Ok so a farmer with 300 meters of fencing wants to enclose a rectangular plot that borders a river. if the farmer does not fence in the the side along the river what is th e largest area that can be enclose? The side adjacent to the river equals 3000-2x The next one is a projectile is fired at an inclination of 45 degrees to the horizontal, with a muzzle velocity of 150 feet per second. The height of the projectile is given h(x)=(-32x^2/150^2)+x A) At what horizontal distance from the firing point is the height of the projectile a maximum? B) Find the maximum height of the projectile. C) At what horizontal distance from the firing point will the projectile strike the ground/Ooops! Its 3000 meters and the equations is height(x)= neg. 32xsquared divied by 150squared plus x is that better? more

Resolved Question: What is the uncertainty (physics)?

(How do i get the uncertainty in this problem. I already found the density: 1583.62 kg/m3) A radius of a sphere is measured to be (6.45 ± 0.27) cm, and its mass is measured to be (1.78 ± 0.09) kg. Determine the density of the sphere in kilograms per cubic meter and the uncertainty in the density. Use the following formula to calculate the uncertainty in the density: Δρ/ρ = Δm/m + 3Δr/r.) more

Resolved Question: Projectile motion help?

A stone is fired on a level floor with initial speed V=10m/s and angle of elevaton 45 degrees. The equation of the path is y=1/10x(10-x) and the maximum height is .5m, the range is x=10m a) Differentiate the equation of the path and hence find the angle of inclination when the stone hits the wall b) Suppose now that he stone hits a ceiling 2.1 metres high (i) Find the horizontal distance before impact. (ii) Find the angle at which the stone hits the ceiling more

Resolved Question: What is the maximum pipe distance can provide between out door and indoor unit of 70000 BTU split a.c?

I have an 7000 btu split air conditioner and pipe length between indoor and out door is 45 meter company allowed length is 30 meter is it any problem to compressor and system efficiency please help more

Welcome to 45 Meters News

Mumbai Police's 'Spiderman' scales 15-storey building ... - Newstrack India

e even climbed a 45-storey building and 153 meters tall building of Shreepati Arcade as a mark of tribute to the victims of 26/11 Mumbai terror attacks. (ANI)

Mountain Boy Minerals Ltd.: 309.3 Grams Per Tonne (g/t ... - PR-USA.net

In this area, the mineralized horizon is up to 80 meters thick and has been drilled to a depth of 300 meters below surface. The zone dips approximately 45 degrees to the northwest, parallel to the hillside making it amenable to open pit mining if a ...

Mumbai Police’s ‘Spiderman’ scales 15-storey ... - Thaindian.com

He even climbed a 45-storey building and 153 meters tall building of Shreepati Arcade as a mark of tribute to the victims of 26/11 Mumbai terror attacks. (ANI)

10 Afghans killed in blast in Helmand province - Pantagraph

Khost police Chief Yaqoub Khan was about 40 yards (meters) away from the blast but was not injured. He said Afghan and U.S. forces provided enough security to prevent a deadlier attack "but unfortunately the enemy uses every means and planted a bomb ...

ELECTRICITY USE: NV Energy tests smart meters in new ... - Las Vegas Review Journal

A small pilot program would begin in 2011, and NV Energy plans to change out the rest of Nevada's 1.45 million meters in 2012. The utility said installation of the meters could create about 200 jobs. The company has 72 meter readers on staff now.

Men's Track & Field wins nine events on day two of ... - Texas Sports

Freshman CJ Jesset claimed the 1,500 meters in 3:53.24, while redshirt freshman Lorin Wilson took the 3,000 meters with a time of 8:45.99. The Horns also won both the 4x100 and 4x400-meter relays. The 400-meter relay clocked a 40.93, while the 1,600 ...

Kuck of U.S. Skates to Victory - New York Times

Kuck, 20, won in 1:45.36. Ireen Wust of the Netherlands held the women’s overall lead after finishing second in the 3,000 meters and sixth in the 500. Yekaterina Shikhova of Russia won the 500 in 38.83 seconds, and the defending champion Martina ...

An American Record and Three National Records Highlight ... - Associated Content

Other national records established at the women's championships, include 16:19.32 in the 5,000 meters by Rebecca Lowe, of Florida, for Australia; 45 feet 5 ¼ inches (13.85 meters) in the triple jump by Patricia Mamona , of Clemson, for Portugal; and ...

Higher parking fines might feed Pittsburgh pensions - PITTSBURGH TRIBUNE-REVIEW

Expired meters in off-street lots would increase from $10 to $20; in Downtown and Oakland they would go from $15 to $30. • Residential parking violation would increase from $35 to $45. Fines for expired meters and illegal parking could nearly ...

Indian Hills' Corey Crawford excels at Indoor Classic - NorthJersey.com

Paramus Catholic sophomore Myasia Jacobs was third in the girls 60 meters in 7.56 seconds after just missing the State record of 7.45 by winning her semifinal in 7.47, and set a Bergen County record of 24.37 in taking fifth in the 200 meters ...

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