Answers:
a) 
We know the Earth's surface area in square miles is:
On the other hand, we know 
.
Then:
b) 
In this part, we can work with the obtained value in part a:
And knowing 
Hence:
c) 
Knowing 
:
Answer:
Converted to heat energy
Explanation:
Some of the elastic potential energy is transformed into heat energy. When we stretch a rubber band, it is often observed that the rubber becomes warmer after the stretch and even during the stretch.
Some energy in the band initially at rest will be converted into elastic potential energy and heat energy as it is stretched .
- The heat energy is not usually accounted for since the major concern most times is the elastic energy.
- In this process, heat energy becomes a waste energy.
- By deducing the efficiency, we would find that this transformation is not efficient as predicted by one of the laws of thermodynamics.
A because it doesn't have properties of transverse waves or longitudinal.
