Titan,the largest moon of Saturn,has an orbital period of 16 days and a semimajor axis of 1.2 × 109 m.Based on this information,what is Saturn's mass? For reference,the Earth's mass is 6 × 1024 kg.

A) 290 MEarth B) 130 MEarth C) 90 MEarth D) 40 MEarth E) 4 MEarth A) 290 MEarth B) 130 MEarth C) 90 MEarth D) 40 MEarth E) 4 MEarth

What is the escape velocity from a large asteroid if its mass is 6 × 1021 kg and its radius is 2,400 km?

A) 98 km/s B) 210 km/s C) 340 m/s D) 580 m/s E) 12,400 m/s A) 98 km/s B) 210 km/s C) 340 m/s D) 580 m/s E) 12,400 m/s

Exam 4: Gravity and Orbits

Titan,the largest moon of Saturn,has an orbital period of 16 days and a semimajor axis of 1.2 × 10⁹ m.Based on this information,what is Saturn's mass? For reference,the Earth's mass is 6 × 10²⁴ kg.

(Multiple Choice)

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Question 21

The moon keeps the same hemisphere facing the Earth because the _ is equal to the _.

(Multiple Choice)

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Question 22

Suppose you are suddenly transported to a planet with 1/4 the mass of Earth but the same radius as the Earth.Your weight would _ by a factor of _.

(Multiple Choice)

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Question 23

If you measured the orbital period of the Moon and the distance between the Earth and the Moon then you could calculate:

(Multiple Choice)

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Question 24

What is the velocity one would need to give a satellite in order for it to escape from the Solar System (meaning escape the Sun's gravity)if it was launched from the Earth at a distance of 1 AU from the Sun? Give your answer in units of m/s.

(Essay)

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Question 25

Two rocks (call them S and T)are a distance of 50 km from one another.Rock S has 20 times the mass of rock T.Considering only their mutual gravitational force,which rock will accelerate faster in response to gravity?

(Multiple Choice)

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Question 26

The force of gravity that an object has is directly proportional to its:

(Multiple Choice)

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Question 27

You discover a moon orbiting a planet.The moon has an orbital period of three weeks,and the average distance between the moon and planet is 1.2 × 10⁶ km.What is the planet's mass? Compare its mass to that of Jupiter,which is 1.9 × 10²⁷ kg.

(Essay)

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Question 28

An unbound orbit results when a satellite has a velocity greater than the escape velocity.

(True/False)

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Question 29

Explain what the terms circular velocity and escape velocity mean.Give the formula for each and explain what each mathematical symbol represents.

(Essay)

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Question 30

Assume that a planet just like Earth orbits the bright star named Sirius.If this Earth-like planet orbits with a semimajor axis of 1 AU and an orbital period of 7 months,what is the mass of Sirius?

(Multiple Choice)

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Question 31

Mass and weight are different names for the same physical property of matter.

(True/False)

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Question 32

Which one of the statements below about a planet's Roche limit is FALSE?

(Multiple Choice)

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Question 33

Because of tidal forces,for every _ time(s)it rotates on its axis,Mercury revolves around the Sun _ time(s).

(Multiple Choice)

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Question 34

When the Sun and Moon are separated by 90 degrees in the sky,_ tides occur on Earth when the strength of the tides are _ than normal.

(Multiple Choice)

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Question 35

All objects on Earth,regardless of the size of their mass,fall with the same acceleration.

(True/False)

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Question 36

What is the escape velocity from a large asteroid if its mass is 6 × 10²¹ kg and its radius is 2,400 km?

(Multiple Choice)

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Question 37

Explain the difference between being weightless and being in free fall.

(Essay)

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Question 38

The International Space Station orbits at an altitude of 400 km above the Earth's surface.Assuming it is in a stable circular orbit,what is its velocity? For reference,the Earth's radius is 6,400 km,and Earth's mass is 6 × 10²⁴ kg and G = 6.7 × 10⁻¹¹ N m²/kg².

(Essay)

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Question 39

How fast is the Moon moving as it orbits the Earth? For reference,the Moon's orbit is approximately circular with a radius equal to 400,000 km,and the Moon's orbital period is 27 days.

(Multiple Choice)

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Question 40

Showing 21 - 40 of 74

Exam 4: Gravity and Orbits

Titan,the largest moon of Saturn,has an orbital period of 16 days and a semimajor axis of 1.2 × 109 m.Based on this information,what is Saturn's mass? For reference,the Earth's mass is 6 × 1024 kg.

The moon keeps the same hemisphere facing the Earth because the _________ is equal to the _________.

Suppose you are suddenly transported to a planet with 1/4 the mass of Earth but the same radius as the Earth.Your weight would _________ by a factor of _________.

If you measured the orbital period of the Moon and the distance between the Earth and the Moon then you could calculate:

What is the velocity one would need to give a satellite in order for it to escape from the Solar System (meaning escape the Sun's gravity)if it was launched from the Earth at a distance of 1 AU from the Sun? Give your answer in units of m/s.

Two rocks (call them S and T)are a distance of 50 km from one another.Rock S has 20 times the mass of rock T.Considering only their mutual gravitational force,which rock will accelerate faster in response to gravity?

The force of gravity that an object has is directly proportional to its:

You discover a moon orbiting a planet.The moon has an orbital period of three weeks,and the average distance between the moon and planet is 1.2 × 106 km.What is the planet's mass? Compare its mass to that of Jupiter,which is 1.9 × 1027 kg.

An unbound orbit results when a satellite has a velocity greater than the escape velocity.

Explain what the terms circular velocity and escape velocity mean.Give the formula for each and explain what each mathematical symbol represents.

Assume that a planet just like Earth orbits the bright star named Sirius.If this Earth-like planet orbits with a semimajor axis of 1 AU and an orbital period of 7 months,what is the mass of Sirius?

Mass and weight are different names for the same physical property of matter.

Which one of the statements below about a planet's Roche limit is FALSE?

Because of tidal forces,for every _________ time(s)it rotates on its axis,Mercury revolves around the Sun _________ time(s).

When the Sun and Moon are separated by 90 degrees in the sky,_________ tides occur on Earth when the strength of the tides are _________ than normal.

All objects on Earth,regardless of the size of their mass,fall with the same acceleration.

What is the escape velocity from a large asteroid if its mass is 6 × 1021 kg and its radius is 2,400 km?

Explain the difference between being weightless and being in free fall.

The International Space Station orbits at an altitude of 400 km above the Earth's surface.Assuming it is in a stable circular orbit,what is its velocity? For reference,the Earth's radius is 6,400 km,and Earth's mass is 6 × 1024 kg and G = 6.7 × 10−11 N m2/kg2.

How fast is the Moon moving as it orbits the Earth? For reference,the Moon's orbit is approximately circular with a radius equal to 400,000 km,and the Moon's orbital period is 27 days.

Why Learn Astronomy

Patterns in the Skymotions of Earth

Motion of Astronomical Bodies

Light

The Tools of the Astronomer

The Birth and Evolution of Planetary Systems

The Terrestrial Planets and Earths Moon

Atmospheres of the Terrestrial Planets

Worlds of Gas and Liquid the Giant Planets

Planetary Adornments Moons and Rings

Dwarf Planets and Small Solar System Bodies

Taking the Measure of Stars

Our Starthe Sun

Star Formation and the Interstellar Medium

Evolution of Low-Mass Stars

Evolution of High-Mass Stars

Relativity and Black Holes

The Expanding Universe

Galaxies

The Milky Waya Normal Spiral Galaxy

Modern Cosmology

Large-Scale Structure in the Universe

Life

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Titan,the largest moon of Saturn,has an orbital period of 16 days and a semimajor axis of 1.2 × 10⁹ m.Based on this information,what is Saturn's mass? For reference,the Earth's mass is 6 × 10²⁴ kg.

The moon keeps the same hemisphere facing the Earth because the _ is equal to the _.

Suppose you are suddenly transported to a planet with 1/4 the mass of Earth but the same radius as the Earth.Your weight would _ by a factor of _.

You discover a moon orbiting a planet.The moon has an orbital period of three weeks,and the average distance between the moon and planet is 1.2 × 10⁶ km.What is the planet's mass? Compare its mass to that of Jupiter,which is 1.9 × 10²⁷ kg.

Because of tidal forces,for every _ time(s)it rotates on its axis,Mercury revolves around the Sun _ time(s).

When the Sun and Moon are separated by 90 degrees in the sky,_ tides occur on Earth when the strength of the tides are _ than normal.

What is the escape velocity from a large asteroid if its mass is 6 × 10²¹ kg and its radius is 2,400 km?

The International Space Station orbits at an altitude of 400 km above the Earth's surface.Assuming it is in a stable circular orbit,what is its velocity? For reference,the Earth's radius is 6,400 km,and Earth's mass is 6 × 10²⁴ kg and G = 6.7 × 10⁻¹¹ N m²/kg².