The tires of a car support the weight of a stationary car. If one tire has a slow leak, the air pressure within the tire will _______ with time, the surface area between the tire and the road will ________ in time, and the net force the tire exerts
on the road will ___________ in time. A) decrease, increase, remain constant
B) decrease, increase, decrease
C) decrease, decrease, decrease
D) increase, increase, increase
E) decrease, increase, increase
A
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Why do higher-mass stars live shorter lives on the main sequence than lower-mass stars?
a. Higher-mass stars burn through their nuclear fuel faster. b. Lower-mass stars don't get their energy from that same nuclear fusion source as higher-mass stars. c. Higher-mass stars have less hydrogen fuel to burn. d. Lower-mass stars spend a longer time evolving to the main sequence. e. All of the other choices are false.
Polarization: Unpolarized light passes through a combination of two ideal polarizers. The transmission axes of the first polarizer and the second polarizer are at 30.0° to each other. What percentage of the original light gets through the combination?
A. 37.5% B. 50% C. 75% D. 100%
A ball player wishes to determine pitching speed by throwing a ball horizontally from an elevation 5 m above ground level. The ball lands 20 m downrange. The player's pitching speed is about
A) 5 m/s. B) 10 m/s. C) 20 m/s. D) 25 m/s. E) none of the above
Explain why freezing rain is more commonly associated with warm fronts than with cold fronts
What will be an ideal response?