Yes, for example a plain is moving so it has kinetic energy, it is also high above the ground so it has gravitational potential energy
travel through a vacuum at the speed of light. Other waves need a medium; sound waves need molecules that vibrate.
Answer:106560 N
Explanation:
Given
Let Tension between 2 and 3 car be
and between 3 &4 is 

mass of freight car =37,000 kg
acceleration of car
is accelerating all freights behind 3
therefore


Thus


Answer:
Refraction
Explanation:
When light passes from a rarer medium into a denser medium, it bends in the medium away from the normal. This creates the phenomenon of "apparent depth" as given in the question.