Gravitational Fields(Senior Class Physics Study by Topics) : GATE Academy

Welcome to your Gravitational Fields(Senior Class Physics Study by Topics)

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PHONE NUMBER

With the left arm held out to the side and elbow fully extended and a coordinate system origin at the elbow joint.
The hand could be said to have a polar coordinate of (30 cm, 0 degree) which of the following could represent the coordinate of the hand with the elbow flexed to 90 degrees

30cm, 0 degree

0 degree, 30cm

0cm, 90 degree

30cm, 90 degree

Suppose the moon had twice as much mass as it now does and still orbited the Earth at the same distance. In that case, the ocean bulges on Earth would be

Larger.

Smaller.

Unequal in size.

Not significantly different.

How is the gravitational field strength related to the gravitational potential?

Gravitational field strength = gravitational potential gradient

Gravitational field strength = gravitational potential

Gravitational field strength = gravitational potential energy

If the mass of the Earth somehow increased with no change in radius, your weight would

Decrease.

Increase also.

Stay the same

Magnitude of momentum

Mass

Magnitude of acceleration

Kinetic energy

Which of the following is NOT true

Force is required to maintain a constant state of motion

There must be a force to change a systems motion

Force possess the capability to change motion

Motion can exist without a force

The origin of any micro tides in the human body is most likely the

Moon

Sun

Earth

What is the relationship between equipotential lines and lines of force.

They are parallel to each other

The are perpendicular to each other

They are equidistant

If the sun collapsed to a black hole, the Earth's gravitational attraction to it would be

The same.

Less.

More.

10.

Which of the following statements best describes the motion of air molecules that transmit sound waves?

The air molecules oscillate perpendicular to the direction of propagation while remaining in the same general position.

The air molecules oscillate parallel to the direction of propagation and move along with the wave.

The air molecules oscillate perpendicular to the direction of propagation while moving along with the wave.

The air molecules oscillate parallel to the direction of propagation and remain in the same general position.

11.

The factor most directly responsible for making a black hole invisible is its

Surface escape velocity.

Mass.

Color.

Size.

12.

The gravitational field lines close to the earth are equidistant and parallel. What does this mean?

The gravitational field increases linearly

The gravitational field is constant

The field lines cancel out

The gravitational field decreases linearly

13.

Inside a freely falling runaway elevator, your

All of these

Acceleration is zero.

Gravitational interaction with the Earth is zero.

Apparent weight is zero.

14.

Two objects move toward each other because of gravity. As the objects get closer and closer, the force between them

Increases, then decreases.

Decreases, then increases.

Increases.

Decreases.

15.

The amount of gravitational force that acts on the space shuttle while in orbit is

Nearly zero.

Almost as much as the shuttle's weight on the Earth's surface.

The same as the shuttle's weight on the Earth's surface.

16.

What is the force of gravity on a 500-newton woman standing on the Earth's surface?

5000 N

500 N

250 N

50 N

17.

A weight watcher who normally weighs 400 N stands on top of a very tall ladder so she is one Earth radius above the Earth's surface. How much would she weigh there?

200 N

400 N

100 N

18.

The planet Jupiter is about 300 times as massive as Earth, yet on its surface you would weigh only about 3 times as much. This is because

Jupiter's radius is 10 times the Earth's radius.

Jupiter is significantly farther from the sun.

You are 100 times more weightless there

Your mass is 100 times less on Jupiter.

19.

The amount of potential gravitational energy possessed by an object is not proportional to

Height

Speed

Gravity

Mass

20.

Passengers in a high-flying jumbo jet feel their normal weight in flight, while passengers in the orbiting space shuttle do not. This is because passengers in the space shuttle are

All of these

Beyond the main pull of Earth's gravity.

Above the Earth's atmosphere.

Without support forces.

21.

We do not observe tides in a community swimming pool because

All parts of it are practically the same distance from the moon.

They are masked by the much stronger pull of Earth gravity

It is shallow compared to the ocean.

Gravitation on the small mass of water is negligibly small.

22.

3.14 m/s^2

12.8 m/s^2

61.0 m/s^2

0 m/s^2

23.

According to Keler, the path of a planet's orbit is in the shape of _____________

An ellipse, with the earth at one of the foci

A circle, with the earth at the center

An ellipse, with the sun at one of the foci

A circle, with the sun at the center

24.

During an eclipse of the sun the high ocean tides on Earth are

Extra high.

Not particularly different.

Extra low.

25.

According to Newton's Law of Universal Gravitation, which of the following do you NOT need to know in order to calculate the force of gravitational attraction between 2 objects?

Distance between the two objects

Radius of the larger object

Mass of the larger object

Mass of the smaller object

1 out of 25

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Gravitational Fields(Senior Class Physics Study by Topics)

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