Two moons orbit a planet in nearly circular orbits. Moon A has orbital radius r, and moon B has orbital radius 4r
Moon A takes 20 days to complete one orbit. How long does it take moon B to complete an orbit?
A)
20 days
B)
40 days
C)
80 days
D)
160 days
E)
320 days
D
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What phase does the Moon experience 14 days after the time of a solar eclipse?
A) third quarter B) waxing gibbous C) new D) waning gibbous E) full
Dr. Chuck projects a ball horizontally from a lab bench. The ball lands on a bullseye marked on the floor a horizontal distance equal to the ball's initial speed
A) multiplied by its time in the air. B) coupled with its speed of fall. C) squared plus its downward speed squared when hitting the floor. D) all of the above E) none of the above
A closed cubical chamber resting on the floor contains oil and a piston
If you push down on the piston hard enough to increase the pressure just below the piston by an amount ?p, which of the following statements is correct? (There could be more than one correct choice.) A) The pressure on the sides of the chamber will not increase. B) The pressure at the top of the oil will increase by less than ?p. C) The pressure everywhere in the oil will increase by ?p. D) The increase in the force on the top of the chamber will be the same as the increase in the force on the bottom of the chamber. E) The pressure at the bottom of the oil will increase by more than ?p.
Which of these is an inherent, unchanging property of any given solid or liquid material?
a. mass b. weight c. volume d. shape e. density