What is the temperature of a system in thermal equilibrium with another system made up of water and steam at one atmosphere of pressure?
a. 0F
b. 273 K
c. 0 K
d. 100C
[Ques. 2] A point charge of +4.0 C is located at the origin of a coordinate system and a second point charge of 6.6 C is at x = 1.7 m. What is the electric potential at the x = 0.85 m point? (ke = 8.99 109 Nm2/C2)
a. 2.9 104 V
b. 27 104 V
c. 56 104 V
d. 2.7 104 V
e. 56 104 V
[Ques. 3] The zeroth law of thermodynamics pertains to what relational condition that may exist between two systems?
a. zero net forces
b. zero velocities
c. zero temperature
d. thermal equilibrium
[Ques. 4] At what distance from a point charge of 8.0 C would the electrical potential be 4.8 104 V? (ke = 8.99 109 Nm2/C2)
a. 1.8 m
b. 0.43 m
c. 1.5 m
d. 5.4 m
e. 0.60 m
[Ques. 5] Which best describes the relationship between two systems in thermal equilibrium?
a. no net energy is exchanged
b. volumes are equal
c. masses are equal
d. zero velocity
[Ques. 6] Two point charges of values +3.6 and +6.9 C are separated by 0.40 m. What is the electrical potential at the point midway between the two point charges? (ke = 8.99 109 Nm2/C2)
a. +0.47 MV
b. 0.24 MV
c. +0.24 MV
d. +0.97 MV
e. 0.47 MV
[Ques. 7] Carbon dioxide and water molecules in the atmosphere will absorb
a. infrared light.
b. visible light.
c. ultraviolet light.
d. radio waves.
[Ques. 8] Two point charges of values +2.0 and +5.5 C, respectively, are separated by 0.50 m. What is the potential energy of this 2-charge system? (ke = 8.99 109 Nm2/C2)
a. +0.50 J
b. 0.20 J
c. +0.20 J
d. 0.41 J
e. +0.41 J
[Ques. 9] Which of the following produces greenhouse gases?
a. burning fossil fuel
b. digestive processes in cows
c. automobile pollution
d. all of the above
[Ques. 10] Find the electrical potential at 0.25 m from a point charge of 7.0 C. (ke = 8.99 109 Nm2/C2)
a. 3.4 104 V
b. 2.5 105 V
c. 3.2 106 V
d. 3.2 107 V
e. 3.4 105 V
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