The total number of particles given by in an ideal gas of bosons of non-zero mass is 3/2 2x(2m) de b(e-h)-1 s. 1 n= eb1 0 (a) explain what is meant by each of the two terms in this equation. (there is to define the individual symbols.) no need [2 marks (b) briefly outline what is meant by the critical temperature tc. describe the properties of the gas at temperatures below te and explain how they arise. 5 marks] (c) near the critical temperature, the molar heat capacity at constant volume, cy, for a system of bosons is greater than the classical value of 1.5r. explain whether or not you expect the value to approach 1.5r at higher temperatures

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

the components of a vector are the parts of the vectors that are to each other.

b perpendicular