1. What is the color of the light at A and at B?
A ______
B _______
2. A light source transfers 20 J of energy into 4 J of Light and some heat energy.
B. A microphone transfers sound energy into 120 J of electrical energy and 30 J of heat energy.
3. There are two different types of energy sources.
(a) One type of energy source cannot be replaced once it is used up
what is the name of this type of energy source?
___________________________________
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Answer:
b because every light are different conglutions
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