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Wize University Physics Textbook (Master) > Heat and Temperature

Temperature vs Heat

3 Activities

The following diagram shows the heating process of 200 𝑔 of an unknown
substance at constant rate. The substance is gas at 40℃. (Cgas=1500  Jkg⋅K)\left(C_{gas}=1500\ \ \frac{J}{kg\cdot K}\right)
a. What is the power of heating? input your answer in J/S, to 2 sig. figs., do NOT include units.
b. What is the heat of vaporization of this substance? Input your answer in kg, to 1 sig. fig., do NOT include units.
c. What fraction of this substance is in liquid phase at 𝑡 = 120 𝑠? Input your answer as a %.


Question A
More Temperature vs Heat Questions:
Temperature Scales
Peter was not feeling well. He checked his body temperature using a thermometer, it was 40oC. What is this temperature on the Fahrenheit scale? Do you think Peter is seriously ill!
A mercury thermometer sits in a glass of water for a very long time. The temperature reads 30 degrees. What can we conclude for this?
Temperature vs. Heat
If two objects are put together one is 100 degrees and one is 50 degrees. What will the systems final temperature be?
Practice Question 4
One of the hottest temperature ever recorded on the surface of earth was 134oF in the Death valley.
Thermal energy
Compare a huge ice-berg to a red hot piece of metal (fist sized) which of the following is true?
How much heat must be absorbed by 375 grams of water to raise its temperature by 25° C?
Do not include units in your answer.
Round your answer to 2 sig figs and type your answer in scientific notation (ex. 1.2⋅1061.2\cdot10^6)
A sample absorbed 2×102J2\times 10^2 J of heat energy and its temperature is increased by 4 K. Calculate the number of moles of the sample if its molar heat capacity is 75.1 J/K.mole.
Liquid helium boiling point is -268.9oC. What is this temperature in oF and K.
Practice Question 3
a) At what temperature do the Fahrenheit and Celsius scales have the same numerical value?
b) At what temperature do the Fahrenheit and Kelvin scales have the same numerical value?
Practice Question 1
How are heat and temperature related?
Temperature Scales
Peter was not feeling well. He checked his body temperature using a thermometer, it was 40oC. What is this temperature on the Fahrenheit scale? Do you think Peter is seriously ill!