Exam 18: Temperature, Heat, and the First Law of Thermodynamics

When a certain constant volume gas thermometer is in thermal contact with water at its triple point (273.16 K) the pressure is 6.30 * 10⁴ Pa. For this thermometer a kelvin corresponds to a change in pressure of about:

In the first law of thermodynamics, the sign of the heat transfer Q:

During the time that latent heat is involved in a change of state:

The energy given off by 300 grams of an alloy as it cools by 50 $\degree$ C raises the temperature of 300 grams of water from 30 $\degree$ C to 40 $\degree$ C. The specific heat of the alloy is:

Solid A, with mass M, is at its melting point T_A. It is placed in thermal contact with solid B, with heat capacity C_B and initially at temperature T_B (T_B > T_A). The combination is thermally isolated. A has latent heat of fusion L and when it has melted has heat capacity C_A. If A completely melts the final temperature of both A and B is:

In the figure, a gas undergoes a transition from point A to point B along the path shown. How much work is done by the gas?

In an adiabatic process:

Possible units for the coefficient of volume expansion are:

A metal sample of mass M requires a power input P to just remain molten. When the heater is turned off, the metal solidifies in a time T. The specific latent heat of fusion of this metal is:

Fahrenheit and Kelvin scales agree numerically at a reading of:

A thermos bottle works well because:

Thermal energy can be transferred by convection:

Metal pipes, used to carry water, sometimes burst in the winter because:

A cube of aluminum has an edge length of 20 cm. Aluminum has a density 2.7 times that of water (1 g/cm³) and a specific heat 0.217 times that of water (1 cal/g.C˚). When the internal energy of the cube increases by 47000 cal its temperature increases by:

The zeroth law of thermodynamics allows us to define

The rate of heat flow by conduction through a slab does NOT depend upon the: