If the volume of a container is decreased while the mass and temperature of the gas inside it stay constant, the pressure will increase
a. True
b. False
Indicate whether the statement is true or false
True
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A 1.5 kg ball is floating in water. The volume displaced by the ball is
A. 0.0015 
B. 0.0027
C. 0.0036
D. 0.0040
E. 0.0051
Venus' rotation on its axis
A) is the fastest of the terrestrial planets. B) is clockwise, unlike most other solar system objects. C) is highly tilted to its orbital plane, causing large seasonal changes. D) shows it is tidally locked in its orbit around the Sun. E) prevents us from seeing all of its surface features.
Nearsightedness can be corrected with a diverging lens
Indicate whether the statement is true or false
A 2.5-cm-OD hot steam line at 100°C runs parallel to a 5.0-cm-OD cold water line at 15°C. The pipes are 5 cm center to center and deeply buried in concrete with a thermal conductivity of 0.87 W/(m K). What is the heat transfer per meter of pipe between the two pipes?
GIVEN
Hot pipe outside diameter (Dh) = 2.5 cm = 0.025 m
Hot pipe temperature (Th) = 100°C
Cold pipe outside diameter (Dc) = 5.0 cm = 0.05 m
Cold pipe temperature (Tc) = 15°C
Center to center distance between pipes (l) = 5 cm = 0.05 m
Thermal conductivity of concrete (k) = 0.87 W/(m K)
FIND
The heat transfer per meter of pipe (q/L)
ASSUMPTIONS
Two dimensional heat transfer between the pipes
Steady state conditions
Uniform thermal conductivity
SKETCH
