B. We can see only one side of the Moon from Earth.
( we only see one side of the moon because the moon rotates around the Earth)
I believe the answer is the second one.
The correct statements are:
B. a small rock sitting on top of a big rock
As the rock is at a height with respect to ground it has potential Energy
and
C. a stretched rubber band
A stretched rubber band has elastic potential energy
The others are actually moving and hence would consist of Kinetic energy. Potential energy is stored in objects that do not move and are stationary.
Answer:
Explanation:
power through string can be determined as shown in figure
Where
P = 57.3 W
V = 13.87 m/s
H = 567 g/m
we know that
therefore 
