Question

A box of negligible mass containing 2 moles of an ideal gas of molar mass m and adiabatic exponent ï§ moves with constant speed v on a smooth horizontal surface. if the box suddenly stops, then change in temperature of gas will be

Answer 1

The total kinetic energy will be equal to the change in the internal energy.

nRΔT/Y-1=1/2mv²m2

Then we have to put n=2 since it is written that a box of negligible mass contains 2 mole of an ideal gas .

XRΔT/Y-1 = 1/2MV²X2

ΔT=(Y-1)MV²/2R this is the equation for this problem which will find the temperature of the gas if the box suddenly stops.

Answer 2

The total kinetic energy will be equal to the change in the internal energy.

nRΔT/Y-1=1/2mv²m2

Then we have to put n=2 since it is written that a box of negligible mass contains 2 mole of an ideal gas .

XRΔT/Y-1 = 1/2MV²X2

ΔT=(Y-1)MV²/2R

Thank you