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

A Kelvin thermometer and a Fahrenheit thermometer both give the same reading for a certain sample. The corresponding Celsius temperature is:

An electric stove burner of diameter 20 cm is at a temperature of 250 °C. If σ = 5.67 x 10^-8 W/m²·K⁴, at what rate is the burner radiating energy? Assume the emissivity ε = 0.6.

A balloon is filled with cold air and placed in a warm room. It is NOT in thermal equilibrium with the air of the room until

Room temperature is about 20 degrees on the:

The coefficient of linear expansion of steel is 11 *10^-6 per C $\degree$ . A steel ball has a volume of exactly 100 cm³ at 0 $\degree$ C. When heated to 100 $\degree$ C, its volume becomes:

Thin strips of iron and zinc are riveted together to form a bimetallic strip which bends when heated. The iron is on the inside of the bend because:

A gram of distilled water at 4 $\degree$ C:

The heat of fusion of water is 79.5 cal/g. This means 79.5 cal of energy are required to:

The three phases of matter are:

A system undergoes an adiabatic process in which its internal energy increases by 20 J. Which of the following statements is true?

How many calories are required to change one gram of 0 $\degree$ C ice to 100 $\degree$ C steam? The latent heat of fusion is 80 cal/g and the latent heat of vaporization is 540 cal/g. The specific heat of water is 1.00 cal/g . K.

The formation of ice from water is accompanied by:

The specific heat of lead is 0.030 cal/g . $\degree$ C. 300 g of lead shot at 100 $\degree$ C is mixed with 100 g of water at 70 $\degree$ C in an insulated container. The final temperature of the mixture is:

The Stanford linear accelerator contains hundreds of brass disks tightly fitted into a steel tube (see figure). The coefficient of linear expansion of the brass is 2.00 *10^-5 per C $\degree$ . The system was assembled by cooling the disks in dry ice (-57 $\degree$ C) to enable them to just slide into the close-fitting tube. If the diameter of a disk is 80.00 mm at 43 $\degree$ C, what is its diameter in the dry ice?

Heat is:

The specific heat of a substance is:

What is the limiting low temperature of a physical object?

Pressure vs. volume graphs for a certain gas undergoing five different cyclic processes are shown below. During which cycle does the gas do the greatest positive work?

One degree is the same on the following temperature scales:

An iron stove, used for heating a room by radiation, is more efficient if: