Question 1

Determine the change in length of a 20-m railroad track made of steel if the temperature is changed from −15°C to +35°C. (αSTEEL = 1.1 × 10−5/°C)

Accepted Answer

Question 2

Suppose the ends of a 30-m long steel beam are rigidly clamped at 0°C to prevent expansion. The beam has a cross-sectional area of 30 cm2. What force against the clamps does the beam exert when it is heated to 40°C? (αSteel = 1.1 × 10−5/°C, Ysteel = 20 × 1010 N/m2).

Accepted Answer

Question 3

In order to understand the concept of temperature it is necessary to understand

Accepted Answer

A)  the zeroth law of thermodynamics. 
B)  the first law of thermodynamics. 
C)  the second law of thermodynamics. 
D)  all of the above. 
E)  only (b) and (c) above. 
A)  the zeroth law of thermodynamics. 
B)  the first law of thermodynamics. 
C)  the second law of thermodynamics. 
D)  all of the above. 
E)  only (b) and (c) above.

Question 4

The pressure of a substance is directly proportional to its volume when the temperature is held constant and inversely proportional to its temperature when the volume is held constant. Is this substance an ideal gas? Explain why your answer is correct.

Accepted Answer

No. Since P = kV and P = k'/T

Question 5

Death Valley in California receives many German tourists. When you convert a summer temperature reading of 130° F to the Celsius scale they use at home, you find that the Celsius temperature is about

Accepted Answer

A)  26° C. 
B)  54° C. 
C)  72° C. 
D)  176° C 
E)  327° C. 
A)  26° C. 
B)  54° C. 
C)  72° C. 
D)  176° C 
E)  327° C.

Question 6

A constant volume gas thermometer has a pressure of 2.00 atm at 100°C. What would its pressure be at 0°C?

Accepted Answer

A)  0.732 atm 
B)  1.46 atm 
C)  1.24 atm 
D)  1.37 atm 
E)  More information is needed to find the answer. 
A)  0.732 atm 
B)  1.46 atm 
C)  1.24 atm 
D)  1.37 atm 
E)  More information is needed to find the answer.

Question 7

An auditorium has dimensions 10 m × 10 m × 60 m. How many moles of air fill this volume at one atmosphere and 0°C?

Accepted Answer

A)  2.7 × 102 
B)  2.7 × 104 
C)  2.7 × 103 
D)  2.7 × 105 
E)  2.7 × 106 
A)  2.7 × 102 
B)  2.7 × 104 
C)  2.7 × 103 
D)  2.7 × 105 
E)  2.7 × 106

Exam 19: Temperature

Determine the change in length of a 20-m railroad track made of steel if the temperature is changed from −15°C to +35°C. (αSTEEL = 1.1 × 10−5/°C)

Suppose the ends of a 30-m long steel beam are rigidly clamped at 0°C to prevent expansion. The beam has a cross-sectional area of 30 cm2. What force against the clamps does the beam exert when it is heated to 40°C? (αSteel = 1.1 × 10−5/°C, Ysteel = 20 × 1010 N/m2).

In order to understand the concept of temperature it is necessary to understand

The pressure of a substance is directly proportional to its volume when the temperature is held constant and inversely proportional to its temperature when the volume is held constant. Is this substance an ideal gas? Explain why your answer is correct.

Death Valley in California receives many German tourists. When you convert a summer temperature reading of 130° F to the Celsius scale they use at home, you find that the Celsius temperature is about

A constant volume gas thermometer has a pressure of 2.00 atm at 100°C. What would its pressure be at 0°C?

An auditorium has dimensions 10 m × 10 m × 60 m. How many moles of air fill this volume at one atmosphere and 0°C?

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Determine the change in length of a 20-m railroad track made of steel if the temperature is changed from −15°C to +35°C. (α_STEEL = 1.1 × 10−⁵/°C)

Suppose the ends of a 30-m long steel beam are rigidly clamped at 0°C to prevent expansion. The beam has a cross-sectional area of 30 cm². What force against the clamps does the beam exert when it is heated to 40°C? (α_Steel = 1.1 × 10−⁵/°C, Y_steel = 20 × 10¹⁰ N/m²).