Gravitational Field

• 0.17

• 0.27

• 0.69

• 1.1

Tags

NGSS.HS-PS2-4

A small satellite has a weight of 1200 N at the Earth's surface. It is launched into a circular orbit with radius equal to twice the radius of the Earth. The weight of the satellite in this orbit is

• 0 N

• 300 N

• 600 N

• 1200 N

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Mars has twice the mass of Mercury and is 4 times further away from the Sun. The ratio of the gravitational force from the Sun on Mercury to the gravitational force from the Sun on Mars is

• 0.5

• 2.0

• 8.0

• 32

Tags

NGSS.HS-PS2-4

Which of the following statements is correct?

• Electrostatic forces have a much longer range than gravitational forces

• Gravitational forces have a much longer range than electrostatic forces

• Gravitational and electrostatic forces both obey and inverse square law

• Gravitational and electrostatic field strength are both scalar quantities.

Tags

NGSS.HS-PS2-4

The gravitational field strength (g.f.s.) at the surface of the Earth is 9.8 Nkg^-1. A satellite is orbiting at a height above the ground equal to the radius of the Earth. Assuming Earth's mass is 6.0 x 10²⁴ kg, what is g.f.s in Nkg^-1 at this height?

• 0.0

• 2.5

• 4.9

• 9.8

Tags

NGSS.HS-PS2-4

A planet has a radius R at a distance h above the surface of the planet. The gravitational field strength (gfs) is g and gravitational potential is Φ. What is meant by gfs.

• The angle of gravitational field lines in any given area.

• The gravitational potential energy needed to move a mass.

• The gravitational force per unit mass exerted on a point mass.

• The kinetic energy of the planet and the point mass combined.

Tags

NGSS.HS-PS2-4

Two moons orbit a planet in circular orbits. Moon A has orbital radius R and moon B has orbital radius 4R. Moon A takes 20 days to complete one shift. How long does it take moon B to complete an orbit?

• 160 days

• 125 days

• 100 days

• 78 days

Tags

NGSS.HS-ESS1-4

It takes planet Jupiter 12 years to orbit the sun once in a nearly circular orbit. Assuming that Jupiter's orbit is truly circular, what si the distance from Jupiter to the sun, given that the distance from the earth to the sun is 1.5 x 10¹¹ m?

• 2.0 x 10⁸ m

• 4.0 x 10⁸ m

• 6.0 x 10¹¹ m

• 8.0 x 10¹¹ m

Tags

NGSS.HS-ESS1-4

The mass of Mars is 6.42 x 10²³ kg while the mass of the Sun is 2.0 x 10³⁰ kg. If Mars is 2.28 x 10¹¹ m away from the sun, at what velocity does Mars move around the sun?

• 1.0 x 10⁶ m/s

• 2.0 x 10⁵ m/s

• 2.4 x 10⁴ m/s

• 3.7 x 10³ m/s

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

The mass of Mars is 6.42 x 10²³ kg while the mass of the Sun is 2.0 x 10³⁰ kg. If Mars is 2.28 x 10¹¹ m away from the sun, what is the force of gravity experienced by Mars from the sun?

• 3.5 x 10²³ N

• 3.0 x 10^{22 N}

• 2.4 x 10²⁰ N

• 1.6 x 10²¹ N

Tags

NGSS.HS-PS2-4