3. Which of the following magnetic scenarios will repel each
other?
1.N-N 2. N-S 3. S-N 4. S-S
a. 1 and 2
b. 2 and 3
c. 1 and 4
d. 3 and 4

option C (1 and 4)

Explanation:

Like poles repel each other, unlike poles attract each other

would be false hope this out

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.