When I was a teenager, I saw a Candid Camera sequence in which they filmed a person struggling with a suitcase that (unknown to that person) contained a large and rapidly spinning gyroscope. Imagine you are carrying such a suitcase where the gyroscope’s angular velocity is oriented horizontally to your right as you carry it in your right hand. Imagine you try to make a left turn, thus turning the suitcase to the left around a vertical axis. What does the suitcase do?
A. It turns to the left as one would expect.
B. It tries to turn instead to the right.
C. It tries to rotate around a horizontal axis, with its right face turning upward.
D. It tries to rotate around a horizontal axis, with its left face turning upward.
E. It tries to rotate around a rightward axis, with its front edge moving up.
C. It tries to rotate around a horizontal axis, with its right face turning upward.
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Indicate whether the statement is true or false
Suppose that the electric force between two objects is 2 N and that you then halve the distance between the objects. The new force is
A) 1 N. B) 0.25 N. C) 0.5 N. D) 8 N. E) 4 N.
If we increase our use of fossil fuels, will more people get skin cancer?
A) Yes, because the increased CFC gas will cause an increase of cancer-causing UV radiation. B) Yes, because the increased atmospheric temperature will result in more cancer-causing sunburns. C) No, because the increased CO2 will not cause an increase of cancer-causing UV radiation. D) Yes, because the increased CO2 will cause an increase of cancer-causing UV radiation. E) No, because the increased CFC gas will not cause an increase of cancer-causing UV radiation.
What is another simple way to describe the weight of an object?
a. The mass of that object. b. The mass of that object at an acceleration of 1 m/s2. c. The magnitude of the force attracting it toward Earth's surface. d. The height of that object. e. The acceleration of that object.