Compared with the mass of an apple on Earth, the mass of the same apple on the Moon is
A) less.
B) more.
C) the same.
Answer: C
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You have measured Doppler shifts to plot velocity curves for two otherwise identical stars. Star A has a period of 6 months and Star B has a period of 1 year. What can you say about the planets causing the motions of these stars?
A) Star A's planet is more massive than Star B's planet. B) Star A's planet must orbit closer in than Star B's planet. C) It is impossible to say anything about the planets orbiting these stars. D) Star B must have a planet like Earth.
If an apple experiences a constant net force, it will have a constant
A) velocity. B) speed. C) acceleration. D) position. E) more than one of the above
In the winter Vermonters make a tasty treat called "sugar on snow" in which they pour boiled-down maple syrup onto a scoop of clean fresh snow
As the syrup hits the snow it forms a delicious taffy. Which of the following changes are involved in the making of sugar on snow? A) Boiling down the maple syrup involves the evaporation of water. B) The syrup warms the snow causing it to melt while the syrup becomes more viscous. C) As the maple syrup is boiled the sugar within the syrup begins to caramelize, which is an example of a chemical change. D) All of the above changes are involved in the making of sugar on snow.
A boy on a bicycle approaches a brick wall as he sounds his horn at a frequency 400 Hz. The sound he hears reflected back from the wall is at a frequency 408 Hz
At what is the speed is the boy riding his bicycle toward the wall? Assume the speed of sound in air is 340 m/s. A) 3.68 m/s B) 333 m/s C) 6.67 m/s D) 6.80 m/s E) 3.37 m/s