Force = N
(c) Piston Y starts at rest, rises slowly and then comes to rest.
State how the following energy stores have changed from before the motion to
after the motion is complete.
(4)
Energy store
Change
gravitational potential energy
of piston X
gravitational potential energy
of piston Y
chemical energy of piston Y
kinetic energy of piston Y
(Total for Question 10 = 15 marks)

the working equation for the angular size is the product of the physical size and 360 degrees divided by the product of two pi and distance from earth. the minimum size would be 0.559 degrees while the maximum size would be 0.49 degrees. 

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

answer///terminator or twilight zone;