Review

Question 1

Question 2

Question 3

A) This statement is wrong because it has the word kinetic. Since it is stated that P doesn’t slide here what occurs is static friction.
B) Due to the force F, Q tends to move forward. To oppose this the friction by P on Q acts backwards.
C)

Question 4

Here what happens is cannot be explained exactly due to the anomalous expansion of water. According to the initial temperature of water inside the vessel the answer changes.

Question 5