Suppose you are in a spaceship accelerating away from Earth at 9.8 m/s2 (1 g), so that you can walk on the floor of your spaceship as though experiencing normal gravity on Earth. Is it possible for you to consider yourself to be at rest? Why or why not?
A) yes, by assuming you are feeling effects of gravity and that Earth is accelerating away from you because it is in freefall
B) no, because you feel a force so you must truly be accelerating
C) No, because you are accelerating away from Earth, and it's not legitimate to claim that Earth is accelerating away from you.
D) yes, but only if you believe that you are the center of the universe
A) yes, by assuming you are feeling effects of gravity and that Earth is accelerating away from you because it is in freefall
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How much would a teaspoon of white dwarf material weigh on Earth?
A) the same as a teaspoonful of Earthlike material B) about the same as Mt. Everest C) about the same as Earth D) a few tons E) a few million tons
If our eyes were sensitive only to X rays, the world would appear __________.
A. gray, black, and white like a medical X ray B. brighter than normal because X rays carry more energy than visible light photons C. dark because X-ray light does not reach Earth’s surface D. green, yellow, and orange, because those are the colors of X rays
Lobate scarps are believed to have formed on the moon when its interior cooled and shrank
Indicate whether the statement is true or false
Consider a rigid body that is rotating. Which of the following is an accurate statement?
A) Its center of rotation must be at rest, i.e., not moving. B) Its center of rotation must be moving with a constant velocity. C) All points on the body are moving with the same angular velocity. D) Its center of rotation is its center of gravity. E) All points on the body are moving with the same linear velocity.