Question 1

The heating element of an electric stove is glowing.The color of the hot stove element is red with a blackbody radiation with a maximum at a wavelength of 1.000 micron.What is the temperature of the stove element?

Accepted Answer

A)   2276 K
B)   2537 K
C)   2898 K
D)   3137 K
E)   3375 K

Question 2

The specific heat of ice is 2.100 kJ/kg  ∘^{\circ}∘ C,the heat of fusion for ice at 0 ∘^{\circ}∘ C is 333.7 kJ/kg,the specific heat of water 4.186 kJ/kg ∘^{\circ}∘ C,the heat of vaporization of water at 100.0 ∘^{\circ}∘ C is 2,256 kJ/kg,and the specific heat of steam is 2.020 kJ/kg  ∘^{\circ}∘ C.What is the final equilibrium temperature when 20.00 grams of ice at -15.0 ∘^{\circ}∘ C is mixed with 5.000 grams of steam at 120.0 ∘^{\circ}∘ C?

Accepted Answer

A)   59.92 ∘^{\circ}∘ C
B)   56.03 ∘^{\circ}∘ C
C)   52.76 ∘^{\circ}∘ C
D)   49.34 ∘^{\circ}∘ C
E)   45.67 ∘^{\circ}∘ C

Question 3

A brass rod with a length of 20.0 cm is placed side by side with an aluminum rod with a length of 20.0 cm and this system is placed between a hot temperature of 150 ∘^{\circ}∘ C and a cold temperature of -10.0 ∘^{\circ}∘ C.The coefficient of thermal conductivities of the brass and the aluminum are 100 W/m ∘^{\circ}∘ C and 230 W/m C respectively.The rods have the same cross sectional area of 20.0 cm2.What is the heat flow from the hot temperature to the cold temperature?

Accepted Answer

A)   683 W
B)   528 W
C)   52.8 W
D)   68.3 W

Question 4

A 1500 W portable heater is needed to replace the heat lost through a circular window in the wall of a home that is made of a single pane of glass 0.30 cm thick.Thermal conductivity for the glass is 0.63 W/mK.The temperature inside the house is 20 ∘^{\circ}∘ C and outside is -12 ∘^{\circ}∘ C.What is the radius of the window?

Accepted Answer

A)   47 cm
B)   53 cm
C)   27 cm
D)   7.1 cm
E)   84 cm

Question 5

The specific heat of ice is 2.100 kJ/kg  ∘^{\circ}∘ C,the heat of fusion for ice at 0 ∘^{\circ}∘ C is 333.7 kJ/kg,the specific heat of water 4.186 kJ/kg ∘^{\circ}∘ C,and the heat of vaporization of water at 100 ∘^{\circ}∘ C is 2,256 kJ/k.What is the final equilibrium temperature when 10.00 grams of ice at -15.00 ∘^{\circ}∘ C is mixed with 2.00 grams of steam at 100.0 ∘^{\circ}∘ C?

Accepted Answer

A)   27.54 ∘^{\circ}∘ C
B)   33.79 ∘^{\circ}∘ C
C)   40.12 ∘^{\circ}∘ C
D)   45.71 ∘^{\circ}∘ C
E)   53.53 ∘^{\circ}∘ C

Question 6

Which of the following is NOT included in the internal energy of a system?

Accepted Answer

A)   the kinetic energy of the center of mass
B)   the kinetic energy of the individual particles
C)   the spring potential energy of the individual particles
D)   the chemical energy of the individual particles
E)   the nuclear energy of the individual particles

Question 7

The specific of ice is 2.10 kJ/kg  ∘^{\circ}∘ C,the heat of fusion for ice at 0 ∘^{\circ}∘ C is 333.7 kJ/kg,the specific heat of water 4.186 kJ/kg  ∘^{\circ}∘ C,and the heat of vaporization of water at 100 ∘^{\circ}∘ C is 2,256 kJ/kg.What is the final equilibrium temperature when 10.0 grams of ice at -15 ∘^{\circ}∘ C is mixed with 40.0 grams of water at 75 ∘^{\circ}∘ C?

Accepted Answer

A)   59.5 ∘^{\circ}∘ C
B)   57.2 ∘^{\circ}∘ C
C)   53.6 ∘^{\circ}∘ C
D)   48.9 ∘^{\circ}∘ C
E)   42.6 ∘^{\circ}∘ C

Exam 14: Heat

The heating element of an electric stove is glowing.The color of the hot stove element is red with a blackbody radiation with a maximum at a wavelength of 1.000 micron.What is the temperature of the stove element?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Which of the following is NOT included in the internal energy of a system?

Correct Answer
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Exam 14: Heat

The heating element of an electric stove is glowing.The color of the hot stove element is red with a blackbody radiation with a maximum at a wavelength of 1.000 micron.What is the temperature of the stove element?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following is NOT included in the internal energy of a system?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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