Answer:
1. Coal: Combustion reaction converts chemical energy into light and heat.
2.Loudspeaker, also called speaker, in sound reproduction, device for converting electrical energy into acoustical signal energy that is radiated into a room or open air.
3.Burning of crackers is an example of a chemical change in which all the three things that is heat light as well as sound is produced.
4.A power drill converts electrical energy to mechanical energy when plugged in and used.
5.electric fan with radio connected in the plug
Explanation: electricity to mechanical- is the electric fan
Because the electricity helps to act the mechanical or engine to created the specific energy {wind} and the sound energy acted is the radio...
{electricity+ mechanical}= electric fan act the wind energy
{electricity+ sound}= radio act the sound energy
Explanation:
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