To create a horseshoe magnet, take a bar magnet and bend it into a u-shape. The creates a strong magnetic field in the region between the two poles at the end of the horseshoe magnet. An electron is shot through a spot somewhere between these ends of a horseshoe magnet. The electron : a) is unaffected by the field.
b) direction is changed.
c) speed is changed.
d) is attracted to one of the poles, and repelled by the other.
e) is repelled by both poles, and therefore is turned back.

1 - wave length

2 - amplitude

3 - crest

4 - trough

explanation:

duh.

truck y has a greater velocity than truck x.

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.