Two planets are orbiting a star in a distant galaxy. The first has a semimajor axis of 150 * 106 km, an eccentricity of 0.20, and a period of 1.0 Earth years. The second has a semimajor axis of 250 *106 km, an eccentricity of 0.30, and a period of:

A) 0.46 Earth yr B) 0.57 Earth yr C) 1.4 Earth yr D) 1.7 Earth yr E) 2.8 Earth yr A) 0.46 Earth yr B) 0.57 Earth yr C) 1.4 Earth yr D) 1.7 Earth yr E) 2.8 Earth yr

Neglecting air resistance, the escape speed from a certain planet for an empty space vehicle is 1.12 *104 m/s. What is the corresponding escape speed for the fully loaded vehicle which has triple the mass of the empty one?

A) 3.73 * 103 m/s B) 1.12 * 104 m/s C) 3.36 * 104 m/s D) 1.01 *105 m/s E) 1.40*1012 m/s A) 3.73 * 103 m/s B) 1.12 * 104 m/s C) 3.36 * 104 m/s D) 1.01 *105 m/s E) 1.40*1012 m/s

Suppose you have a pendulum clock which keeps correct time on Earth (acceleration due to gravity = 9.8 m/s2). Without changing the clock, you take it to the Moon (acceleration due to gravity = 1.6 m/s2). For every hour interval (on Earth) the Moon clock will record:

A) (9.8/1.6) h B) 1 h C) D) (1.6/9.8) h E) A) (9.8/1.6) h B) 1 h C) D) (1.6/9.8) h E)

Exam 13: Gravitation

Explore all topics

Two planets are orbiting a star in a distant galaxy. The first has a semimajor axis of 150 * 10⁶ km, an eccentricity of 0.20, and a period of 1.0 Earth years. The second has a semimajor axis of 250 *10⁶ km, an eccentricity of 0.30, and a period of:

(Multiple Choice)

4.9/5

(38)

Question 21

Four particles, each with mass m, are arranged symmetrically about the origin on the x axis. A fifth particle, with mass M, is on the y axis. The direction of the gravitational force on M is:

(Multiple Choice)

4.9/5

(37)

Question 22

A mass m is located at the origin; a second mass m is at x = d. A third mass m is above the first two so the three masses form an equilateral triangle. What is the net gravitational force on the third mass?

(Multiple Choice)

4.9/5

(33)

Question 23

A planet in another solar system orbits a star with a mass of 4.0 * 10³⁰ kg. At one point in its orbit it is 250* 10⁶ km from the star and is moving at 35 km/s. Take the universal gravitational constant to be 6.67 * 10^-11 m²/s² .0 kg and calculate the semimajor axis of the planet's orbit. The result is:

(Multiple Choice)

4.8/5

(36)

Question 24

A particle might be placed Rank these situations according to the magnitude of the gravitational force on the particle, least to greatest.

(Multiple Choice)

4.8/5

(33)

Question 25

Neglecting air resistance, the escape speed from a certain planet for an empty space vehicle is 1.12 *10⁴ m/s. What is the corresponding escape speed for the fully loaded vehicle which has triple the mass of the empty one?

(Multiple Choice)

4.8/5

(34)

Question 26

Two particles, each of mass m, are a distance d apart. To bring a third particle, with mass 2m, from far away to a resting point midway between the two particles, an external agent must do work equal to:

(Multiple Choice)

4.9/5

(35)

Question 27

A rocket ship is coasting toward a planet. Its captain wishes to know the value of g at the surface of the planet. This may be inferred by:

(Multiple Choice)

4.8/5

(30)

Question 28

Of the following where would the weight of an object be the least?

(Multiple Choice)

4.8/5

(28)

Question 29

Consider the statement: "Earth moves in a stable orbit around the Sun and is therefore in equilibrium". The statement is:

(Multiple Choice)

4.9/5

(33)

Question 30

Assume that Earth is in circular orbit around the Sun with kinetic energy K and potential energy U, taken to be zero for infinite separation. Then, the relationship between K and U:

(Multiple Choice)

4.8/5

(37)

Question 31

Suppose you have a pendulum clock which keeps correct time on Earth (acceleration due to gravity = 9.8 m/s²). Without changing the clock, you take it to the Moon (acceleration due to gravity = 1.6 m/s²). For every hour interval (on Earth) the Moon clock will record:

(Multiple Choice)

4.9/5

(30)

Question 32

An astronaut on the Moon simultaneously drops a feather and a hammer. The fact that they land together shows that:

(Multiple Choice)

4.9/5

(41)

Question 33

A spring scale, calibrated in newtons, is used to weigh sugar. If it were possible to weigh sugar at the following locations, where will the buyer get the most sugar to a newton?

(Multiple Choice)

4.8/5

(40)

Question 34

The speed of a comet in an elliptical orbit about the sun:

(Multiple Choice)

4.7/5

(41)

Question 35

Three particles, two with mass m and one mass M, might be arranged in any of the four configurations known below. Rank the configurations according to the magnitude of the gravitational force on M, least to greatest.

(Multiple Choice)

4.9/5

(39)

Question 36

In Einstein's theory of gravitation, gravity is due to:

(Multiple Choice)

4.8/5

(27)

Question 37

An artificial Earth satellite of mass m is moved from a circular orbit with radius R to a circular orbit with radius 2R. If the mass of the Earth is M_E, the work done by the gravitational force is:

(Multiple Choice)

4.7/5

(38)

Question 38

An artificial satellite of the Earth releases a bomb. Neglecting air resistance, the bomb will:

(Multiple Choice)

4.9/5

(31)

Question 39

The mass of a hypothetical planet is 1/100 that of Earth and its radius is 1/4 that of Earth. If a person weighs 600 N on Earth, what would he weigh on this planet?

(Multiple Choice)

4.8/5

(37)

Question 40

Showing 21 - 40 of 55

Exam 13: Gravitation

Two planets are orbiting a star in a distant galaxy. The first has a semimajor axis of 150 * 106 km, an eccentricity of 0.20, and a period of 1.0 Earth years. The second has a semimajor axis of 250 *106 km, an eccentricity of 0.30, and a period of:

Four particles, each with mass m, are arranged symmetrically about the origin on the x axis. A fifth particle, with mass M, is on the y axis. The direction of the gravitational force on M is:

A mass m is located at the origin; a second mass m is at x = d. A third mass m is above the first two so the three masses form an equilateral triangle. What is the net gravitational force on the third mass?

A particle might be placed Rank these situations according to the magnitude of the gravitational force on the particle, least to greatest.

Neglecting air resistance, the escape speed from a certain planet for an empty space vehicle is 1.12 *104 m/s. What is the corresponding escape speed for the fully loaded vehicle which has triple the mass of the empty one?

Two particles, each of mass m, are a distance d apart. To bring a third particle, with mass 2m, from far away to a resting point midway between the two particles, an external agent must do work equal to:

A rocket ship is coasting toward a planet. Its captain wishes to know the value of g at the surface of the planet. This may be inferred by:

Of the following where would the weight of an object be the least?

Consider the statement: "Earth moves in a stable orbit around the Sun and is therefore in equilibrium". The statement is:

Assume that Earth is in circular orbit around the Sun with kinetic energy K and potential energy U, taken to be zero for infinite separation. Then, the relationship between K and U:

Suppose you have a pendulum clock which keeps correct time on Earth (acceleration due to gravity = 9.8 m/s2). Without changing the clock, you take it to the Moon (acceleration due to gravity = 1.6 m/s2). For every hour interval (on Earth) the Moon clock will record:

An astronaut on the Moon simultaneously drops a feather and a hammer. The fact that they land together shows that:

A spring scale, calibrated in newtons, is used to weigh sugar. If it were possible to weigh sugar at the following locations, where will the buyer get the most sugar to a newton?

The speed of a comet in an elliptical orbit about the sun:

Three particles, two with mass m and one mass M, might be arranged in any of the four configurations known below. Rank the configurations according to the magnitude of the gravitational force on M, least to greatest.

In Einstein's theory of gravitation, gravity is due to:

An artificial Earth satellite of mass m is moved from a circular orbit with radius R to a circular orbit with radius 2R. If the mass of the Earth is ME, the work done by the gravitational force is:

An artificial satellite of the Earth releases a bomb. Neglecting air resistance, the bomb will:

The mass of a hypothetical planet is 1/100 that of Earth and its radius is 1/4 that of Earth. If a person weighs 600 N on Earth, what would he weigh on this planet?

Measurement

Motion Along a Straight Line

Vector

Motion in Two and Three Dimensions

Force and Motion I

Force and Motion II

Kinetic Energy and Work

Potential Energy and Conservation of Energy

Center of Mass and Linear Momentum

Rotation

Rolling, Torque, and Angular Momentum

Equilibrium and Elasticity

Fluids

Oscillations

Waves I

Waves II

Temperature, Heat, and the First Law of Thermodynamics

The Kinetic Theory of Gases

Entropy and the Second Law of Thermodynamics

Electric Charge

Electric Fields

Gauss Law

Electric Potential

Capacitance

Current and Resistance

Circuits

Magnetic Fields

Magnetic Fields Due to Currents

Induction and Inductance

Electromagnetic Oscillations and Alternating Current

Maxwells Equations; Magnetism of Matter

Electromagnetic Waves

Images

Interference

Diffraction

Relativity

Photons and Matter Waves

More About Matter Waves

All About Atoms

Conduction of Electricity in Solids

Nuclear Physics

Energy From the Nucleus

Quarks, Leptons, and the Big Bang

Filters

Two planets are orbiting a star in a distant galaxy. The first has a semimajor axis of 150 * 10⁶ km, an eccentricity of 0.20, and a period of 1.0 Earth years. The second has a semimajor axis of 250 *10⁶ km, an eccentricity of 0.30, and a period of:

Neglecting air resistance, the escape speed from a certain planet for an empty space vehicle is 1.12 *10⁴ m/s. What is the corresponding escape speed for the fully loaded vehicle which has triple the mass of the empty one?

Suppose you have a pendulum clock which keeps correct time on Earth (acceleration due to gravity = 9.8 m/s²). Without changing the clock, you take it to the Moon (acceleration due to gravity = 1.6 m/s²). For every hour interval (on Earth) the Moon clock will record:

An artificial Earth satellite of mass m is moved from a circular orbit with radius R to a circular orbit with radius 2R. If the mass of the Earth is M_E, the work done by the gravitational force is: