One way of writing the internal energy of a system is .

PHYSICS · Multi-part · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

One way of writing the internal energy of a system is

U = \frac{3}{2}NkT

. (a) i State what the terms

N

k

and

T

refer to. ii Show that the internal energy of a system can also be written as

U = \frac{3}{2}nRT

. iii Show also that the internal energy may be written as

U = \frac{3}{2}PV

. (b) Outline four ways in which the internal energy of a system may be changed.