A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper; the aluminum and the copper are in thermal contact. The specific heat capacity of aluminum is more than double that of copper. Which object experiences the greater magnitude gain or loss of heat during the time the system takes to reach thermal equilibrium?

An ideal gas at STP is first compressed until its volume is half the initial volume, and then it is allowed to expand until its pressure is half the initial pressure. All of this is done while holding the temperature constant. If the initial internal energy of the gas is U, the final internal energy of the gas will be:

If you double the thickness of a wall built from a homogeneous material, the rate of heat loss
for a given temperature difference across the thickness will:

A window glass 0.50-cm thick has dimensions of 3.0 m by 1.5 m. If the outside temperature is -10°C and the inside temperature is 20°C, how much heat flows through the window in one hour by conduction only?

A sample of an ideal gas is in a tank of constant volume. The sample gains heat energy and its temperature changes from 300 K to 900 K.

If is the average speed of the gas molecules before absorption of heat and v₂ the average speed after absorption of heat, what is the ratio v₂/v₁ ?