Phase equilibrium between the gaseous and liquid states describes the situation when
A) no more molecules leave the liquid and enter the gas.
B) no more molecules leave the gas and enter the liquid.
C) as many molecules go from liquid to gas as from gas to liquid.
D) the liquid is boiling.
E) None of the other choices is correct.
Question 2
A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the top of the bump?
A) 200 N
B) 389 N
C) 789 N
D) 489 N
E) 589 N
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