1. A spinning ice skater is able to control the rate at which she rotates by pulling in her arms. We can best unders this effect by observing that in this process a. her kinetic energy remains constant. b. her angular momentum remains constant. с. her moment of inertia remains constant. d. her total velocity remains constant. e. she is subject to a constant nonzero torque.

College Physics
11th Edition
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Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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1.
A spinning ice skater is able to control the rate at which she rotates by pulling in her arms. We can best understand
this effect by observing that in this
process
a.
her kinetic energy remains constant.
b.
her angular momentum remains constant.
C.
her moment of inertia remains constant.
d.
her total velocity remains constant.
e.
she is subject to a constant nonzero torque.
2.
If you double the pressure on the surface of a can of water, the buoyant force on a stone placed in that water will
increase, but not double
b.
decrease, but not by one-half.
a.
double.
d.
be cut in half.
C.
not change.
е.
3.
A solid sphere, solid cylinder and a cylindrical shell all have the same mass, m and radius R. If they all have the same
linear speed right before going up an incline, which goes the farthest up the inclined plane?
solid sphere
b.
solid cylinder
a.
d.
all have the same height
cylindrical shell
Transcribed Image Text:1. A spinning ice skater is able to control the rate at which she rotates by pulling in her arms. We can best understand this effect by observing that in this process a. her kinetic energy remains constant. b. her angular momentum remains constant. C. her moment of inertia remains constant. d. her total velocity remains constant. e. she is subject to a constant nonzero torque. 2. If you double the pressure on the surface of a can of water, the buoyant force on a stone placed in that water will increase, but not double b. decrease, but not by one-half. a. double. d. be cut in half. C. not change. е. 3. A solid sphere, solid cylinder and a cylindrical shell all have the same mass, m and radius R. If they all have the same linear speed right before going up an incline, which goes the farthest up the inclined plane? solid sphere b. solid cylinder a. d. all have the same height cylindrical shell
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