Question

Find kinetic energy of 5 litre of a gas at S.T.P. given standard pressure is 1.013 × 10⁵ N/m²

Answer 1

Given : P 1.013 x 10⁵ N/m², V = 5 litres = 5 x 10^-3 m

E = \(\frac32\) PV

= \(\frac32\) (1.013 x 10⁵) (5 x 10^-3)

= 7.5 x 1.013 x 10² J = 7.597 x 10² J

This is the required energy.