Question 1

Suppose the gravitational force of the Earth on a body was  
)What escape velocity ve would a body need to escape the gravitational field of the Earth?

Accepted Answer

A)    . 
B)    . 
C)    . 
D)    . 
E)    . 
A)    . 
B)    . 
C)    . 
D)    . 
E)    .

Question 2

Knowing that  
At sea level and that RE = 6.37 × 106 m,we find that the value of g in  
At a distance RE from the surface of the Earth is

Accepted Answer

A) 1.23. 
B) 2.45. 
C) 4.90. 
D) 7.35. 
E) 9.80. 
A) 1.23. 
B) 2.45. 
C) 4.90. 
D) 7.35. 
E) 9.80.

Question 3

A satellite revolves around the Earth in a circular orbit with a mechanical energy of  
j.What is its kinetic energy?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 4

A satellite of mass m circles a planet of mass M and radius R in an orbit at a height 2R above the surface of the planet.What minimum energy is required to change the orbit to one for which the height of the satellite is 3R above the surface of the planet?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 5

The figure below shows a planet traveling in a counterclockwise direction on an elliptical path around a star located at one focus of the ellipse.When the planet is at point A,

Accepted Answer

A) its speed is constant. 
B) its speed is increasing. 
C) its speed is decreasing. 
D) its speed is a maximum. 
E) its speed is a minimum. 
A) its speed is constant. 
B) its speed is increasing. 
C) its speed is decreasing. 
D) its speed is a maximum. 
E) its speed is a minimum.

Question 6

A 50-kg satellite circles the Earth in an orbit with a period of 120 min.What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4 × 106 m,mass = 6.0 × 1024 kg)

Accepted Answer

A) 2.9 × 108 J 
B) 3.5 × 108 J 
C) 4.1 × 108 J 
D) 4.7 × 108 J 
E) 5.9 × 108 J 
A) 2.9 × 108 J 
B) 3.5 × 108 J 
C) 4.1 × 108 J 
D) 4.7 × 108 J 
E) 5.9 × 108 J

Question 7

Calculate the Earth's angular momentum in the approximation that treats the Earth's orbit around the sun as a circle.(MSun = 1.99 × 1030 kg;T = 3.156 × 107 s;ME = 5.98 × 1024 kg. )

Accepted Answer

Exam 13: Universal Gravitation

Suppose the gravitational force of the Earth on a body was )What escape velocity ve would a body need to escape the gravitational field of the Earth?

Knowing that At sea level and that RE = 6.37 × 106 m,we find that the value of g in At a distance RE from the surface of the Earth is

A satellite revolves around the Earth in a circular orbit with a mechanical energy of j.What is its kinetic energy?

A satellite of mass m circles a planet of mass M and radius R in an orbit at a height 2R above the surface of the planet.What minimum energy is required to change the orbit to one for which the height of the satellite is 3R above the surface of the planet?

The figure below shows a planet traveling in a counterclockwise direction on an elliptical path around a star located at one focus of the ellipse.When the planet is at point A,

A 50-kg satellite circles the Earth in an orbit with a period of 120 min.What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4 × 106 m,mass = 6.0 × 1024 kg)

Calculate the Earth's angular momentum in the approximation that treats the Earth's orbit around the sun as a circle.(MSun = 1.99 × 1030 kg;T = 3.156 × 107 s;ME = 5.98 × 1024 kg. )

Physics and Measurement

Motion in One Dimension

Vectors

Motion in Two Dimensions

The Laws of Motion

Circular Motion and Other Applications of Newtons Laws

Energy of a System

Conservation of Energy

Linear Momentum and Collisions

Rotation of a Rigid Object About a Fixed Axis

Angular Momentum

Static Equilibrium and Elasticity

Fluid Mechanics

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Wave Motion

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Superposition and Standing Waves

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The First Law of Thermodynamics

The Kinetic Theory of Gases

Heat Engines, entropy, and the Second Law of Thermodynamics

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Gausss Law

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Faradays Law

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Electromagnetic Waves

The Nature of Light and the Principles of Ray Optics

Image Formation

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Diffraction Patterns and Polarization

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Introduction to Quantum Physics

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Suppose the gravitational force of the Earth on a body was )What escape velocity v_e would a body need to escape the gravitational field of the Earth?

Knowing that At sea level and that R_E = 6.37 × 10⁶ m,we find that the value of g in At a distance R_E from the surface of the Earth is

A 50-kg satellite circles the Earth in an orbit with a period of 120 min.What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4 × 10⁶ m,mass = 6.0 × 10²⁴ kg)

Calculate the Earth's angular momentum in the approximation that treats the Earth's orbit around the sun as a circle.(M_Sun = 1.99 × 10³⁰ kg;T = 3.156 × 10⁷ s;M_E = 5.98 × 10²⁴ kg. )