Answer:
4000m/s
Explanation:
It would be this because sound travels faster through a solid rather than a liquid.
Answer:
Sound energy is produced when an object vibrates. The sound vibrations cause waves of pressure that travel through a medium, such as air, water, wood or metal. Sound energy is a form of mechanical energy.
Explanation:
Draw a circuit that contains 2 batteries, three lights in parallel and a switch that controls the whole circuit.
force times gravity (FG) =mass times gravity (mg)