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How long does it take to change a light bulb?

i think it takes about 10 seconds if you already have the light bulb in your hand.


10 man-made sources of light?

1. Incandescent light bulb 2. Halogen light bulb 3. Compact fluorescent light bulb 4. Light emitting diode (LED) 5. Mercury vapor light bulb 6. Neon light 7. High intensity discharge lamps 8. Carbon arc lamp 9. laser 10. kerosene lamp


What is the mass of the light bulb?

Depending on the type of light bulb the mass can vary. A standard LED bulb weighs 6.2 ounces.


Does the brain operate on the same amount of power as a 10 watt light bulb?

No, the brain does not operate on the same amount of power as a 10 watt light bulb. The brain is estimated to use about 20 watts of power, which is roughly equivalent to the energy consumption of a dim incandescent light bulb.


Why is a light bulb so inefficient?

A traditional incandescent light bulb is inefficient because it produces more heat than light, wasting energy. Only about 5-10% of the energy consumed by an incandescent bulb is converted into visible light, with the rest being wasted as heat.


Are cfls good?

Over all, CFL light bulbs are good for the environment and they can save $. 1 CFL light bulb has 10 times the life span of a regular light bulb. 1 CFL light bulb could save enough energy to take a car from NY to San Francisco. 1 CFL light bulb uses between 50% and 80% less energy than a regular light bulb.


How much energy do you save with 10 light bulbs off?

That depends on the power used by each light bulb. Look at the specifications for a specific light bulb, then multiply the power by 10. Note that energy = power x time; that is to say, the energy spent by a light bulb depends on its power, but also on how long you keep it on. Specifically, watts = joules x seconds.


What is 60w light bulb?

a normal incandescent 60 watt light bulb uses 60 watts of electricity to produce 20 watts worth of light, and 40 watts worth of heat. It is more of a heat bulb than a light bulb. it is great if you can capitalise on the free heat, but if it is not cold in your house, turn it off. is there a better bulb? no. why are they ideal? cheap (as low as 10 cents for the el cheapos), never change shape/design/size/compatability, make pleasant light I could go on for an hour, but the best bulb is the cheapest.


How do you replace the bulb in the head light s for a 2002 s-10?

VERY CAREFULLY!


What vegetables can power a 10 watt light bulb?

carrots, potatoes, and mush roomms.


How much of the electrical energy used to light an incandescent bulb is converted into light energy?

Only about 10% of the electrical energy used to light an incandescent bulb is converted into light energy. The rest is mostly given off as heat.


Why does energy saver give more light than electric bulb of same watt?

Both bulbs output the same amount of energy. The difference is in how much of that energy is output as heat vs the energy output as light. In a standard incandescent light bulb about 10% of the energy is output as light while the other 90% is output as heat. This makes the bulb only 10% efficient. For a florescent bulb the output of light is about 50% and the other 50% is output in heat. This means that a fluorescent bulb outputs five times as much light for the same wattage as a standard incandescent bulb, hence you can get the equivalent of 100 watts of light output for only 20 watts of electricity.