20. Heat and Temperature

The temperature of the filament in a lightbulb is about 1900°C. What is this on the Fahrenheit scale?

You buy an “airtight” potato chip bag packaged at sea level, and take the chips on an airplane flight. When you take the potato chip bag out of your “carry-on” bag, you notice it has noticeably “puffed up.” Airplane cabins are typically pressurized at 0.75 atm, and assuming the temperature inside an airplane is about the same as inside a potato chip processing plant, by what percentage has the bag “puffed up” in comparison to when it was packaged?

A demented scientist creates a new temperature scale, the 'Z scale.' He decides to call the boiling point of nitrogen 0°Z and the melting point of iron 1000°Z. Convert 500°Z to degrees Celsius and to kelvins.

When the temperature of matter decreases, which of the following typically occurs?

As you climb to higher altitudes in the troposphere, what generally happens to the air temperature?

How does altitude affect temperature in different latitudes?

What is temperature a measure of?

(I) (a) “Room temperature” is often taken to be 68°F. What is this on the Celsius scale?

Like the Kelvin scale, the Rankine scale is an absolute temperature scale: Absolute zero is zero degrees Rankine (0°R). However, the units of this scale are the same size as those of the Fahrenheit scale rather than the Celsius scale. What is the numerical value of the triple-point temperature of water on the Rankine scale?

What are the following temperatures on the Kelvin scale: - 55° C?

Typical temperatures in the interior of the Earth and Sun are about 4000°C and 15 x 10⁶ °C, respectively. What percent error is made in each case if a person forgets to change °C to K?

Calculate the one temperature at which Fahrenheit and Celsius thermometers agree with each other.

A scuba tank is filled with air to a gauge pressure of 202 atm when the air temperature is 29°C. A diver then jumps into the ocean and, after a short time on the ocean surface, checks the tank’s pressure and finds that it is only 191 atm. Assuming the diver has inhaled a negligible amount of air from the tank, what is the temperature of the ocean water?

If 59.2 L of oxygen at 18.0°C and an absolute pressure of 2.45 atm are compressed to 38.8 L and at the same time the temperature is raised to 56.0°C, what will the new pressure be?

The tungsten filaments inside of most incandescent lightbulbs reach temperatures of about 4580°F when the lightbulbs are lit. What is this temperature in a) Celsius and b) Kelvin?