Which of these statements is not necessarily true for two objects in thermal equilibrium?

A). The objects are made of tiny particles that are moving at the same rate.

B). The objects' temperatures are not changing.

C). The objects have the same temperature.

D). The objects' temperatures have both changed by the same amount.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.