Universal Gravitation Chapter 9 Test P3
Quiz by Ian Meek
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- Q1
For some massive stars, gravitational collapse doesn’t stop until the density of the star becomes so enormous that even light cannot escape. Such a star becomes a black hole.
truefalseTrue or False300s - Q2
The earth and the sun pull on each other with the same amount of gravitational force.
truefalseTrue or False300s - Q3
Ocean tides are caused by differences in the gravitational pulls by the moon on opposite sides of the earth.
truefalseTrue or False300s - Q4
The gravitational force of Earth on an object increases as the object moves farther from Earth.
falsetrueTrue or False300s - Q5
If Earth were its present volume but with more mass, we would weigh more.
truefalseTrue or False300s - Q6
The gravitational force between two massive spheres
is always an attraction.
depends on how massive they are.
depends inversely on the square of the distances between them.
all of the answers given
300s - Q7Suppose the gravitational force between two massive balls is 20N. If the distance between the balls is cut in half, what is the force between the masses?
5 N
20 N
40 N
80 N
300s - Q8
The gravitational field strength at the center of Earth is
zero.
great.
smaller than on the surface but still larger than zero.
the same as on the surface.
300s - Q9
If you were to weigh yourself in an elevator that is accelerating upward, compared to your ordinary weight you would weigh
more.
zero.
the same.
less, but more than zero.
300s - Q10
By what factor would your weight be multiplied if Earth’s diameter shrank to half and Earth’s mass doubled?
Users enter free textType an Answer300s