By what factor does the volume of a cube increase if the lengths of the edges are tripled?
A. 6
B. 9
C. 3
D. 27
D. 27
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What would prevent free convection at very low Grashof numbers in an enclosed space?
What will be an ideal response?
When we apply the Lorentz factor ? to length contraction, we
A) multiply by ? as in the equation for time dilation. B) multiply by the reciprocal of ? C) find it does not apply.
The volume measuring system for a gasoline pump at the service station is calibrated at 20.0°C. If the temperature of the gasoline drops to 10.0°C,
what percentage extra amount of mass of gasoline do you receive when making a purchase? The coefficient of volume expansion for gasoline is 9.5 × 10-4/K. A) 1.33% B) 1.90% C) 1.05% D) 2.24% E) 0.95%
Air expands adiabatically (no heat in, no heat out) from T = 300 K and P = 100 atm to a final pressure of 1 atm. Treat the gas as ideal with g = 1.4, and determine the final temperature. Compare your result to the boiling points of nitrogen (77.4 K) and oxygen (90.2 K). Could this method result in the liquification of air?