Answer:
music amplifier or a loudspeaker
Explanation:
A music amplifier or a loudspeaker are a few devices that convert electrical energy into sound energy.
As it is a well known fact that energy can neither be created nor be destroyed it can only change from one form to the other. As here it is changing from electrical to sound.
It is the crust, the least dense layer.
The paper is not clear so please ask your problem again with more clear print
Answer:
According to the law of conservation of mass, the mass of reactants will be equal to the mass of the products.
Explanation:
