Pls help on all 1. The gravitational force between two spherical masses is Fg. Which of the following would increase thegravitational force between the objects to 16F,?a) increasing the distance by a factor of 4.b) increasing the distance by a factor of 16.c) increasing the mass of one object by a factor of 4.d) increasing the mass of both objects by a factor of 4.2. For a given mass, m, and a given distance, d, separating you and the object, which of the followingwould exert a stronger gravitational force on you?a) an object of mass 7m a distance 15d away.b) an object of mass 9m a distance 5d away.c) an object of mass 8m a distance 3d away.d) an object of mass 12m a distance 4d away.3. Suppose a planet has half the mass of Earth but the same radius. An astronaut stands on the surfaceof the planet and drops a rock from a height of 2.4 m. How much longer does it take the rock to hit theground on that planet than it would on Earth?a) 1.2 times longer.c) 2 times longer.b) V7 times longer.d) 4.8 times longer. tion of motion.4. A satellite is in a circular orbit around the Earth at an altitude of 650 km. What orbital speed must thesatellite maintain to stay in orbit at this altitude?a) 5.7 X 103 m/sc) 2.5 X 10* m/sb) 7.5 X 103 m/sd) 7.9 X 10* m/s5. A negatively charged plastic rod comes close to but does not touch a neutral metal sphere. While therod is still close, someone momentarily touches the opposite side of the sphere with her finger. Thecharge on the metal sphere isa) negative.c) neutral.b) positived) cannot be determined.||

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1. The gravitational force between two spherical masses is Fg. Which of the following would increase the gravitational force between the objects to 16F,? a) increasing the distance by a factor of 4. b) increasing the distance by a factor of 16. c) increasing the mass of one object by a factor of 4. d) increasing the mass of both objects by a factor of 4.

1. The gravitational force between two spherical masses is Fg. Which of the following would increase the gravitational force between the objects to 16F,? a) increasing the distance by a factor of 4. b) increasing the distance by a factor of 16. c) increasing the mass of one object by a factor of 4. d) increasing the mass of both objects by a factor of 4.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

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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Concept explainers

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.

Question

Pls help on all

1. The gravitational force between two spherical masses is Fg. Which of the following would increase the
gravitational force between the objects to 16F,?
a) increasing the distance by a factor of 4.
b) increasing the distance by a factor of 16.
c) increasing the mass of one object by a factor of 4.
d) increasing the mass of both objects by a factor of 4.
2. For a given mass, m, and a given distance, d, separating you and the object, which of the following
would exert a stronger gravitational force on you?
a) an object of mass 7m a distance 15d away.
b) an object of mass 9m a distance 5d away.
c) an object of mass 8m a distance 3d away.
d) an object of mass 12m a distance 4d away.
3. Suppose a planet has half the mass of Earth but the same radius. An astronaut stands on the surface
of the planet and drops a rock from a height of 2.4 m. How much longer does it take the rock to hit the
ground on that planet than it would on Earth?
a) 1.2 times longer.
c) 2 times longer.
b) V7 times longer.
d) 4.8 times longer. tion of motion.
4. A satellite is in a circular orbit around the Earth at an altitude of 650 km. What orbital speed must the
satellite maintain to stay in orbit at this altitude?
a) 5.7 X 103 m/s
c) 2.5 X 10* m/s
b) 7.5 X 103 m/s
d) 7.9 X 10* m/s
5. A negatively charged plastic rod comes close to but does not touch a neutral metal sphere. While the
rod is still close, someone momentarily touches the opposite side of the sphere with her finger. The
charge on the metal sphere is
a) negative.
c) neutral.
b) positive
d) cannot be determined.
|
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