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Legends Designs Energy Efficient Light Bulb as Third Product; Seeks Manufacturer

MIAMI, FL, May 06, 2013 (Marketwired via COMTEX) -- Legends Business Group (pinksheets:LGBS), today announced the company's new Executive Energy Consultant, Jeff Wilson, as part of Legends research and development team, which has designed a ...

Access Fixtures LED Bollard Meets the Performance of a 70 Watt Metal Halide

The new LED bollard reduces energy consumption by 80% while emitting the same amount of light output as the 70w metal halide version. With reduced energy consumption and low maintenance, the LED bollards are a green way to safely and effectively ...

TDK-Lambda 2500 Watt Server Power Supply Achieves 80 PLUS Platinum Efficiency

The TDK-Lambda HFE2500 series are ideal for data center, distributed ... mount enclosure is available with AC inputs via IEC inlet, type C20 connectors or terminal blocks for each of the four power module slots. All units in the HFE2500 series are fully ...

Analysis: energy efficiency – Watt matters for white goods

Better information about domestic appliances could have a major impact on households’ energy use With 42% of the average UK household’s energy consumption accounted for by domestic appliances, it makes sense for customers to know the efficiency of ...

Philips LED 100-watt equivalent bulb first to be ENERGY STAR qualified

SOMERSET, N.J., April 2, 2013 /PRNewswire/ -- Continuing in the company's tradition of delivering high quality LED products, Philips today announced that the company's LED 100-watt equivalent bulb, the Philips LED 22-watt, is now ENERGY STAR qualified.

Concert Review: Mike Watt and The Missingmen – LA May 4, 2013

The Redwoods Bar and Grill in downtown Los Angeles hosted a bevy of great bands last Saturday night, capped by the magnetic, eclectic performance of the man with the van with the bass in his hand, Mike Watt, who did a set with his Missingmen ...

Department of Energy Issues Low-cost Wireless Sub-Meter Challenge

The $100 price tag has to include the device, sensor, any base station or repeater, and software, but does not have to include design or installation. No additional software should be required by the user, who is assumed to have internet access.

SmartWatt Energy to Present and Exhibit at AESP’s 2013 Spring Conference & Expo in Dallas, TX

SmartWatt Energy, a leader in commercial energy efficiency program management for utilities, will be presenting and exhibiting at the Association of Energy Services Professionals’ (AESP) 2013 Spring Conference & Expo at The Westin Galleria Dallas in ...

Philips LED is first 100-watt replacement to earn Energy Star

An LED that replaces 100-watt incandescent lightbulbs is the first of that type to earn Energy Star status. Philips announced that its 22-watt LED is the first 100-watt replacement to meet Energy Star's tough requirements of reducing energy consumption by ...

Larson Electronics Announces Release of 450 Watt Pneumatic LED Light Tower

Thousands of Olympia streetlights could be converted from the traditional yellowish, high-pressure sodium lights to whiter, energy-saving LED lamps, in a project estimated to cost nearly $4 million. The Olympi ... Energy efficiency products in America are ...

Resolved Question: How much do solar panels generally cost and are they efficient for my home?

Pros and Cons if I get solar panels? more

Open Question: how to find the energy equivalent of any electrical appliances?

i need to know the energy equivalent of any electrical appliances? like what is the energy equivalent of 40 wattube lightght n 100 watt of fan ?kindly help me do provide formula if it is?for example i don't have appliances rite nw i am working on some calculation i have only the data of watts,duration(time for using that appliance),and number of appliances like 40 watt of tubelights for 6 hr n 3tube lightss and consumption rate interma of monthsavailablee now tell me how can i find the energy equivalentPLzz help me nwfor example i don't have appliances rite nw i am working on some calculation i have only the data of watts,duration(time for using that appliance),and number of appliances like 40 watt of tube lights for 6 hr n 3 tube lights and consumption rate in terms of months available, now tell me how can i find the energy equivalent PLz help me nw plz provide me formula for finding the answer from this data more

Open Question: Energy Transfer - efficiency help?

Am struggling with this question. Any help would be appreciated, thanks. If the ice making machine is fitted with a cooler rated at 1750 watts. Find its efficiency if it produces the 2kg of ice in a time of 17 minutes. (The energy transfer for the previous question was 1293981 J to manufacture 3kg of ice) more

Open Question: Why do New York liberals oppose rigorous standards in public schools?

http://online.wsj.com/article/APb5789c1bb6184ee49df2544f5bd7cb9a.html It's amazing how low standards are in blue states. The students and teachers are complaining that the Math B/Physics exams are "too hard" when they're complete jokes compared to the material I have to do for Physics and PreCalculus in my more rigorous school in the red state of Indiana. http://www.nysedregents.org/physics/612/phys62012-exam_w.pdf Look at Question 22, for example. Anyone in physics should know that a watt is a joule per second, and 1 J/s * 1 s = 1 J, and a joule is a unit of energy. Or question 50, all a student has to do is find the potential energy at the top, which is mgh or (7.5)(9.8)(1.5), which is about 110. Kids who are failing our Physics tests could ace this. All they have to know is that if the sum of the forces on a net object is 0, the acceleration is 0. In our school, we would have to find the tension in a cord with several masses attached at various places and we'd have to take into account the coefficients of friction. We'd also likely have to apply a kinematics equation to find the answer as well, just for one question! We also would get extremely hard conceptual questions, not the "What is the unit for this" BS but really rigorous questions like "There is a current I flowing in a clockwise direction in a square loop of wire that is in the plane of the paper. If the magnetic field B is toward the right, and if each side of the loop has length L, then find the net magnetic torque acting on the loop:" That is so much harder of a question than anything the regents would have, and it's expected of us to know that stuff. For math, it's a similar story. http://www.nysedregents.org/MathematicsB/20100126exam.pdf This Math B exam is supposed to cover up through PreCalculus, yet it barely covers anything that is even remotely at that level. In our school, we have to derive all of the trigonometric identities, verify statements using trig, and learn other proof methods such as induction. The depth of the material covered is also much greater. We have to learn how to graph in 3 dimensions, graph equations using polar coordinates, and learn how to solve limits problems and use derivatives difference quotients. And this is considered one of the easiest advanced classes in the school, far easier than APUSH, AP Literature, or AP Chemistry. Why do liberals have such low standards that they consider pathetically easy tests like this too difficult, even boycotting them? Doesn't that tell you how bad education is in blue states? At my red state school everyone could ace both those tests in a heartbeat. Also, in my suburban high school in Indiana, which is a suburb of Chicago and is quite Republican, the academic standards are much higher than neighboring towns like Gary, Griffith, Hammond, and East Chicago , which are staunchly Democrat. more

Resolved Question: How much energy is transformed if the motor runs for one minute?

There is a current of 2.0 A through a circuit containing a motor with a resistance of 12 Ω. How much energy is transformed if the motor runs for one minute? A. 4.8 x 10^1 J B. 2.0 x 10^1 J C. 2.9 x 10^3 J D. 1.7 x 10^5 J I think it's C. more

Resolved Question: Which aquarium light bulb combo should I use for growing plants?

my aquarium is a 29g tall tank. With only 3 orange tetra's and one male betta fish since the tank is only just finishing cycling because its only about 5 weeks old. I have flora max substrate with 3 amazon swords and 3 Dwarf Baby Tears. As for plants I want I really dont care as long as they work well with my tank set up. I also built this DIY Co2 system which is working great. Also my water is hard I believe. I have 10,000k daylight bulb, 6,700k daylight bulb, and actinic blue light. I can use two. Which combo would be the best for growing plants in my fresh water tropical aquarium. The 6,700k says it is ideal for live plants and the actinic blue light says it promotes photosynthesis, but wouldn't more light like the 10,000k be better for growing plants because its more light? more

Open Question: Energy in hovering, what is the equation to derive this?

So i'm a physics major, and i'm having a discussion with my friend about how much energy would be required for a city to float. He thinks it would be simple and lack much energy input. I argue the opposite. But i can't for the life of me think about how many watts would be required for a building to hover, well you need the force up to match the gravitational attraction of the earth, but no power equation is independent of the distance the force moves or the velocity the object is moving. I can't be bothered trying to derive something. Any ideas. more

Resolved Question: Solar generator for $700-$800?

I've been shopping and really don't know what to get. I've found: -Goal Zero Sherpa 120 -Goal Zero Escape 150 -Humless Roadrunner (has hand crank, good lithium battery) -Instapark® Mars20S-SP30 (although only $400, this way i can get two for backup) -Nature Power 40400 1800-Watt Power Kit with 40-Watt Solar Panel -Grid Eraser Portable Solar Generator ($2500) Purposes: -extended power outage (like hurricanes) -2 children -heat at night -warm water if needed (for freeze-dried food) -boil water if needed to drink -medical devices (ie. nebulizer for my dad) -charge rechargables (laptop, batteries, phone) -small fridge (nice to have, but secondary) not too many reviews out there. i never worked with solar but i guess i should start, so i'm a total newbie. Any maintenance tips?regarding Humless, i see more bad reviews than good. i wonder how it's still in the market. as much as i love the features on it, is it reliable? more

Resolved Question: Does running an LED bulb below the minimum temperature damage it?

I want to replace an incandescent bulb that lights up my front stoop with an LED bulb,but the LED specs say the minimum operating temperature is -25,and where I live,it can get down to -30 or less in winter.Would running it at extremely low temperatures damage the bulb? If not,does the light output drop off,like if I use a compact florescent bulb? more

Resolved Question: Will this PSU handle my PC?

Currently I am using Antec VP550P 550W. But this PSU has lower efficiency (60%) when total system goes down below 110W. So,I am planning to use my old Cooler Master Elite Power 350W which offers over 70% efficiency for such a low power consumption. my system specification Core i5 2400 3.1Ghz Intel DH67BL Sapphire HD7750 1 GB GDDR5 4GB RAM (2X2GB) Kingston and Corsair 1TB Hard Disk Seagate Barracuda Sony Optiarc AD7240S DVD drive As most of the time,I use system browsing and watching HD movies and during that time I believe system consumes extremely less power as both processor and graphics card are energy efficient.And I do games but at 1366 x 768 resolution and not higher than that.For most of the games,I play with V-syc on so that card wont consume more power. more

Resolved Question: Physics help on just three questions?

A crane lifts a 48 kg load at a speed of 1.4 m/s. How much power was delivered? A crane lifts a 150.0 kg load of bricks to the top of a 30.0 m building. How much work was done by the crane? A force of 50.0 N produces 125.0 J of work while moving a sled across the snow. How far does the box move? more

Open Question: derive an expression for the temperature, T, of the system as a function of time, t. PHYSICS?

A student uses some equipment that can add energy at a constant rate to some water contained in an aluminium calorimeter can. To keep the temperature of the water uniform, the student stirs the water with a copper stirrer. Together, the calorimeter can and the stirrer have a mass of mAl and a speciﬁc heat of cAl, and the water has a mass of mw and speciﬁc heat of cw. The initial temperature of the water is T0, and the student begins adding energy to the system at a constant rate of P watts. Assuming there is no energy loss from the system, derive an expression for the temperature, T, of the system as a function of time, t. (Hint: the rate at which energy is added, P = dQ/dt where dQ = (mAlcAl + mwcw)dT. Substitute, rearrange and integrate.) more

Open Question: During the experiment you measure the amount of energy added to the calorimeter. PHYSICS?

During the experiment you measure the amount of energy added to the calorimeter. You will do this by calculating the electrical power, P dissipated by a resistor. If one multimeter says that the current through the resistor is 3.7 A and the other multimeter tells you that the voltage drop across the resistor is 7.6 Volts. The temperature at this time is 24.0o C. What is the power dissipated by the resistor in Watts, W? thank you :) more

Resolved Question: i need to show how many photons are emitted each second, but how?

im told the power of the laser beam is 1.0 mW i need to show that 3x10^15 photons are emitted, i can do every other question but this one :/ more

Open Question: Science help please!!!!!?

You are to compare the electrical requirements of three light bulbs. Use the lighting effect of a 100 w incandescent light bulb as the basis of comparison. For each of the three bulbs, incandescent, CFL, and LED a) state the electrical power (watts) used and the luminous energy (lumens) output by each of the three bulbs, b) calculate the current used by each, c) calculate the effective resistance of each, d) determine the cost of using each bulb for 1 hour.($0.18/kWh) e) comment on the energy and cost aspects of the three bulbs over the life expectancy of the bulbs. Is one cheaper, in money and energy, to use for an extended time? more

Resolved Question: Is work a kind of energy? If yes, what's the technical name of it?

I mean, (if yes) does work have a fancy name such as ''kinetic energy'' or ''electromagnetic energy''? more

Resolved Question: what unit is represnted by (a) joule per coulomb, (b) coulomb per second, and (c) watt - second?

Resolved Question: If the size of everything in the universe was multiplied by 2, how would it effect us?

What would become different, and would Earth still be life-sustainable? If we took all the cells on the Earth, and multiplied them by 2, what would happen? What would happen with things such as black holes, nebulas, stars, and dark matter? more

Resolved Question: Difference between COP and EER in an air-condition?

What is the difference between COP (Coefficient of Performance) and EER (Energy Efficiency Ratio) in a home air-condition? more

Open Question: how much energy would it take to super heat air and make a thunder clap?

i am just curious, how much energy would it take to super heat air (at our atmosphere) to get so hot it will make a thunder clap? is it all about heating the air fast, so theoretically, you could super heat a very small amount of air with a very small amount of energy? i would accept an answer in any form, for ex: joul/kg watts/g calories/kg remember, best answer is 10 points ;)some people say it wouldn't be thunder. what i meat is would it expand very rapidly and create a shock wave that could be heard? what is the smallest amount of superheated air needed to make the rapid expansion of air audible to the human ear?if i have a totally wrong understanding of how super heated air works, please let me explain it to me then ;)if my understanding is correct, you can answer my answer in any units that are comfortable for ex:mega-watts / kgkA / kg (I don't know what kA is lol) more

Resolved Question: Help with this Physics question, please?

How much energy is consumed when a 100.0 W light bulb is left on for 2.00 h? a. 50.0 J b. 100 J c. 200 J d. 720 kJ e. 2000 kJ more

Resolved Question: An object of mass 15.0kg is pushed along a surface from rest with an acceleration of 2.0 m/s for 5 s?

If the coefficient of friction is 0.650, calculate the power required to do this Answer is 6.3*10^3 W more

Resolved Question: How to do this Physics problem?

A crane raises a container weighing 1600 kg from the dock side to the level of the ship's deck, 10m above the dock. It takes 1 minute to raise the container this high and, in so doing the crane uses 240,000 J of energy. a. Calculate the the rate at which the energy is used by the crane. b. Calculate the rate at which work is done by the crane. c. Calculate the efficiency of the crane more

Resolved Question: How does a capacitor smooth a ac voltage input?

and when why i only able to use bigger value of capacitance only, it will be works. once i use like 0.47miu, it will be failure? Can i have any good explanation from you guys? more

Resolved Question: Serious question: what is the case for energy-efficient light bulbs?

How much are they supposed to help energy consumption and the environment? more

Resolved Question: Whats the best graphics card i can buy for this processor without it bottle necking?

Ok so i have a really bad computer and i want to upgrade the graphics card without upgrading the CPU. This is my CPU: intel core 2 duo CPU E6850 @ 3.00GHz What the best Graphics card i should buy? My RAM is only 1.5GB but i will be upgrading it tooMy graphics card right now is radeon HD 5450 (which is bad) more

Resolved Question: WHY 7 Billions people all over the world see GOD almost every day, but did not recognized or believed in HIM ?

HE is our spiritual FATHER , the SUN !!!! more

Resolved Question: What is watt means? Physic power question?

Hello everyone! I'm weak in physic. I have many questions about power but here I'm asking only two of them. My first question is" I have a battery of 28W and if I give him 30W power to charge it. How many time takes it to charge. If the battery was charged 0%" 2nd Question I have 3 lights of 30 watt. Each light is 10 watt. How many time takes these lights to consume all battery. Please share your method. Sorry for my poor English, I'm not the English. Thanks in advance. more

Resolved Question: Can I Plug This In My Existing Outlet?

Considering a purchase of a very small freezer chest (3.5 cu ft.)....supposedly it pulls between 100-125 watts ( my rice steamer pulls 635 W so I will call co. to confirm this, I use a 110-120 outlet with my rice steamer with no problem so I assume it's fine for the freezer chest ???)....anyway if it really does pull 100-125 watts, is it safe to plug it into a 110-120 outlet? Or will we need an electrician to change it to a 220 like the outlet we have our fridge plugged in..I find this watts/volts/amps stuff confusing..please someone enlighten the mathematically/electrically challanged.... why the hay would my rice steamer 'pull' 635 watts while a 3.5 cu ft. freezer chest pulls only 100-125? Something seems wrong here....or does it take more 'juice' to heat than to freeze....@ Joe...Thanks...as you can tell I am NOT married to Tim The Toolman....cool! I can go ahead and order the freezer chest!. more

Resolved Question: Energy and water towers?

Stuck on this question, any help would be appreciated. Have 2 x 30,000L water tanks, one 6m higher than the other. and small turbine which is 90% efficient when giving max output of 300 watts. what percentage of the input energy needed to pump the water up to the top tank could you recover from the turbine as the water ran back to the bottom tank? more

Resolved Question: how is Sun"s energy measure and calculated?

how is sun energy measured how its energy is calculated ? more

Resolved Question: if each fission releases 200 me v, how many fissions occur per second at this power level?

Resolved Question: I would really appreciate some help with physics?

If it wouldn't be too much trouble I would like to know how to get the answer. I actually do want to know how to do this. I just started taking physics online three days ago and I am really struggling. You have arrived at the final accident scene of the day. Two cars of equal mass (2,000 kg each) were involved in a head-on accident at a four-way-stop intersection. Here is what you know: •Car 1 started at rest and coasted toward the intersection from the top of a 50-meter hill. •Car 2 was on a flat stretch of road at the bottom of the hill in front of Car 1. •At the bottom of the hill, before braking, Car 1 was going 30 m/s and Car 2 was going 20 m/s. •From the skid marks on the road you can see that Car 1 applied force on its brakes for 5 seconds, 125 meters before the stop sign where it came to a stop. •There were no skid marks left by Car 2. The collision occurred at the stop sign, where Car 1 had stopped. After the collision, Car 2 came to a stop. Car 1's final velocity is unknown. 1. What was the potential energy of each car at the beginning of the problem? (4 points) 2. What was the kinetic energy of each car while it was traveling at its maximum speed? (4 points) 3. How much energy did Car 1 "lose" from the top to the bottom of the hill, before it began braking? What happened to this lost energy? (3 points) 4. How much force did Car 1 apply to the brakes to stop? (3 points) 5. How much power (in watts) did it take to stop Car 1 by applying force to the brakes? (3 points) 6. What is the momentum of each car right before the accident? (4 points) 7. What was Car 1's final speed after the accident? (4 points) more

Resolved Question: Lighting in my house too dark.?

My house has dark brown walls, the bedrooms have hunter ceiling fans with dome lighting built into them, and the living room and dining room have dome lights with those energy efficient bulbs in them. Yet the house is way too dark, at night you would probably think it was a failed attempt at mood lighting. And yet, the domes are blinding even though the overall light just doesn't cut it. Everyday feels like a headache, and my eyes are strained when reading. With the domes in the middle of the ceiling we can't watch TV because you got to wear a hat to block it from your view. I’m getting worn out from the strain; I don't want to start a project or anything before knowing what to and what not to do first. I’m thinking about trying to find two ceiling fans for the living and dining room that has a dimmer built in. I want a ceiling fan, but I’m starting to wonder if I should forget having a light-source on the fan and instead spread the lights out. I don't have a lot of money, and I don't have any skill in construction or knowledge. I know someone who does though, getting him over is another story though. I need lighting for watching TV as well, is a strobe light behind the TV a bad idea? more

Resolved Question: A car engine has an input power of 75kW and is 60% efficiant. If the friction force of the car is 2500N. Calcu?

I think i calculated the mass from Force friction=Mass*gravity and got 255.1kg. more

Resolved Question: If I have the daily kWh requirement, and the voltage of the battery...?

If I have the daily kWh requirement, and the voltage of the battery, how do I find out how many batteries/cells I need in order to satisfy the daily energy demand? This is an household powered by batteries, so kWh should be around 4kWh/day and the voltage of the single cell of the redox battery is 1.5V. I'm having troubles getting started with it..Hi Big Daddy. The battery is a stack of single all-vanadium redox cells. Is there any formula to find the energy content? Maybe the Gibbs free energy?Would there be a numerical way of calculaing the Amph of my all-vanadium redox cell?(Sorry, I meant analytical) more

Resolved Question: How do I solve this equation involving electricity?

A microwave draws 5.0 Amps when it is connected to a 120 Volts outlet. If electrical energy costs $0.090/kW * h, what is the cost of running the microwave for exactly 6 hours? I have absolutely no idea how to solve this. Most of the questions before have just involved the formulas such as V=I*R, R=V/I, I=V/R, P=I*V, and V=P/I. However, this problem doesn't seem to fit in with those formulas. How would I go about solving this? Thank you in advance! :) more

Resolved Question: The potential difference between a storm cloud...?

The potential difference between a storm cloud and the ground is 100 million V. If a charge of 2 C flashes in a bolt from cloud to Earth, what is the change of potential energy of the charge? Please show how to solve it. Thanks in Advance. more

Resolved Question: Question about calories and watts?

How many (a) basic energy calories and (b) fuel Calories would you have to use to equal your power rating in watts? The power rating in watts is 274.311 watts more

Resolved Question: Is moving objects with the mind possible?

Is it possible to move objects with the mind "telekinesis" possible in the slightest bit? It will be great if you could provide source. more

Resolved Question: A car of mass 800kg is travelling at 25 m/s along a level road.?

How much extra power must the engine develop if the car is to climb a hill of 1 in 20 without a change in speed. more

Resolved Question: Help me choose an home UPS battery?

I have an UPS already,but the battery failed(it did years ago).Now,the power-cuts are more frequent,and the last time I was on the computer,I was about to ask this question.Halfway through it,the power was gone already.I use the following appliances: Refrigerator(maybe 1,000 watts as a rough guess) An mid-sized air cooler(Probably 200 watts) an Desktop PC with a power supply of 450 watts (and another one with that of 400 watts.The one with 400 watts won't be always used.Its LCD monitor will be used for tv tuner,and one CRT monitor will be used only when the pc with 450 watts psu will be used) 9 CFLs.40 watts,10 watts,0 watts 2 celing fans 1 wall mounted fan 1 Washing machine 600 watts(Unlikely to be used during power-cuts) 1 blender 250 watts approx(Same as above) 1 Set top box 1 tv tuner No ovens and\or water heaters,water motors,etc. Thanks. more

Resolved Question: What is fuel flow rate to produce a heat of 13.75MJ in a melting furnance?

I need to design a crucible melting furnace that will produce a heat of about 13.75MJ of heat to melt a certain kg of aluminium and I need to know the flow rate as the design involves me using kerosene and used engine oil as the fuel . All I really need for now is the flow rate at the ejection point of the oil into the furnace using a 2.8cm pipe more

Resolved Question: in E=qV..........................?

does the answer come out in the units of eV or joules more

Resolved Question: How the thickness of the loft insulation affects heat loss?

I have coursework to do and i have done everything but one last question i need to add more detail. Does anybody know how the thickness of the loft insulation affects heat loss. i have been on many sites but none really help. If you could help it would be great. Thanks more

Resolved Question: Can someone help me with electrical wiring?

Why won't this setup work? [IMG]http://i40.tinypic.com/2gv4fet.jpg[/IMG] http://i40.tinypic.com/2gv4fet.jpg more

Resolved Question: how many watts of electricity does hyderabad use every day?

Resolved Question: if i leave external usb port connected to the PC while i'm not using it .. would it still consume power ?

I'm a little concerned about saving energy .. so does it consume alot of energy so i should disconnect it to save money and energy, or is it just a very little bit of energy so it wouldn't make any difference ? more

Resolved Question: how much electricity does a school server use?

I am doing this science fair project to do with conservation of energy and I want to know how much electricity does a school server use? more

Resolved Question: What is considered a significant difference between cell phone's SARs?

I currently have an iPhone which has an SAR of 1.18, but I'm considering getting either a Galaxy Note II (SAR of 0.171) or a Galaxy S4 (SAR of 0.45)? Is there a significant difference in radiation levels between the Note II and the S4? more

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