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How long would a 60 watt light bulb have to burn to produce the energy you used climbing the stairs?
If you weigh 70 kg and the stairs are 3 metres high, the energy needed is 70 x 9.8 x 3 Joules or 2058 joules. That would keep a 60 w bulb going for 2058/60 seconds, or 34.3 seconds.
But to produce that same energy in a generating plant, the fuel energy wasted in the process would be between 2000 joules for a gas plant of 50% efficiency, and 6000 joules for a coal plant of 25% efficiency.
What else can I help you with?
The capacity to do work or produce light is known as?
Energy
Is the moon giving off light energy?
No, the moon does not produce its own light energy. It reflects light from the sun, which is why we see it shining in the night sky.
Name the energy changes that occur to produce light in?
Chemical energy is converted into electromagnetic energy in the form of light.
Low heat light bulbs produce less light but save on energy costs true or false?
False. Low heat light bulbs can produce the same amount of light, and also save on energy.
What type of energy is produced by the chloroplasts?
Chloroplasts do not produce energy.They convert light energy into chemical energy.
Is climbing up the stairs good for the body?
Using the stairs is a simple and convenient form of light exercising.
What kind of energy does the sun produce?
The sun produce light and nuclear energy
What are 3 sources of energy that can cause light emissions?
Chemical energy will produce the light in a firefly, or in a hand-held glow tube. Electrical energy will produce the light in a light bulb. Heating something up to a high enough temperature will produce light. Burning a material may produce light.
What types of energy can flashlights produce?
Flashlight produce light energy and heat after turning on.
Does a toaster produce light energy?
No, a toaster does not produce light energy. Toaster heats up bread using electrical energy which is converted to heat energy for the toasting process.
The capacity to do work or produce light is known as?
Energy
The capacity to do work or produce light is?
The capacity to do work is energy. The capacity to produce light is luminosity.
What is form of energy that can produce heat and light?
The form of energy that can produce heat and light is thermal energy. When thermal energy is transferred to an object, it can raise its temperature and cause it to emit light as well.
Is the moon giving off light energy?
No, the moon does not produce its own light energy. It reflects light from the sun, which is why we see it shining in the night sky.
Name the energy changes that occur to produce light in?
Chemical energy is converted into electromagnetic energy in the form of light.
Why do plants grow to the light?
Plants phtosynthesise to produce energy. Photosynthesis involves turning light energy into chemical energy (glucose) so plants grow towards light so that they can absorb more light and therefore produce more energy that they use to grow etc.
Low heat light bulbs produce less light but save on energy costs true or false?
False. Low heat light bulbs can produce the same amount of light, and also save on energy.
