Question 1

Three identical 50-kg balls are held at the corners of an equilateral triangle,30 cm on each side.If one of the balls is released,what is the magnitude of its initial acceleration if the only forces acting on it are the gravitational forces due to the other two masses? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A)  3.7 × 10-8 m/s2
B)  2.5 × 10-8 m/s2
C)  1.9 × 10-8 m/s2
D)  4.2 × 10-8 m/s2
E)  6.4 × 10-8 m/s2

Question 2

Suppose NASA wants a satellite to revolve around Earth 5 times a day.What should be the radius of its orbit if we neglect the presence of the Moon? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg)

Accepted Answer

A)  1.44 × 107 m
B)  0.69 × 107 m
C)  7.22 × 107 m
D)  2.11 × 107 m

Question 3

The acceleration due to gravity on Planet A is one-sixth what it is on Planet B,and the radius of the Planet A is one-fourth that of Planet B.The mass of Planet A is what fraction of the mass of Planet B?

Accepted Answer

A)  1/6
B)  1/16
C)  1/24
D)  1/96
E)  1/12

Question 4

At a given point above Earth's surface,the acceleration due to gravity is equal to -11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg,Rearth = 6.38 × 106 m)  A) 770 km B) 970 km C) 1,500 km D) 2,000 km E) 2,400 km" class="answers-bank-image d-inline" rel="preload" >
What is the altitude of this point above Earth's surface? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg,Rearth = 6.38 × 106 m)

Accepted Answer

A)  770 km
B)  970 km
C)  1,500 km
D)  2,000 km
E)  2,400 km

Question 5

An object weighs 432 N on the surface of the earth.The earth has radius R.If the object is raised to a height of 3R above the earth's surface,what is its weight?

Accepted Answer

A)  108 N
B)  48.0 N
C)  27.0 N
D)  305 N
E)  144 N

Question 6

Two small objects,with masses m and M,are originally a distance r apart,and the gravitational force on each one has magnitude F.The second object has its mass changed to 2M,and the distance is changed to r/4.What is the magnitude of the new gravitational force?

Accepted Answer

A)  F/32
B)  F/16
C)  16F
D)  32F
E)  2F

Question 7

What would be the weight of a 59.1-kg astronaut on a planet with the same density as Earth and having twice Earth's radius?

Accepted Answer

A)  580 N
B)  290 N
C)  1160 N
D)  2320 N
E)  1200 N

Question 8

What would be the weight of a 59.1-kg astronaut on a planet twice as massive as Earth and having twice Earth's radius?

Accepted Answer

A)  580 N
B)  290 N
C)  1160 N
D)  118 N
E)  1200 N

Question 9

The mass of the Moon is 7.4 × 1022 kg,its radius is 1.74 × 103 km,and it has no atmosphere.What is the acceleration due to gravity at the surface of the Moon? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A)  2.8 × 106 m/s2
B)  9.8 m/s2
C)  4.9 m/s2
D)  1.6 m/s2
E)  0.80 m/s2

Question 10

-11 N ∙ m2/kg2)  A) 0.10 m/s2 B) 0.15 m/s2 C) 0.20 m/s2 D) 0.25 m/s2 E) 0.30 m/s2" class="answers-bank-image d-inline" rel="preload" >
Mithra is an unknown planet that has two airless moons,A and B,in circular orbits around it.The table summarizes the hypothetical data about these moons.If you dropped a laser at the surface of Moon B,at what rate would it accelerate toward the ground? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A)  0.10 m/s2
B)  0.15 m/s2
C)  0.20 m/s2
D)  0.25 m/s2
E)  0.30 m/s2

Question 11

Europa,a satellite of Jupiter,has an orbital diameter of 1.34 × 109 m and a period of 3.55 days.What is the mass of Jupiter? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A)  1.53 × 1027 kg
B)  1.65 × 1027 kg
C)  1.07 × 1027 kg
D)  1.89 × 1027 kg
E)  3.08 × 1027 kg

Question 12

If you stood on a planet having a mass four times that of Earth's mass,and a radius two times that of Earth's radius,you would weigh

Accepted Answer

A)  the same as you do on Earth.
B)  two times more than you do on Earth.
C)  two times less than you do on Earth.
D)  four times more than you do on Earth.

Question 13

The innermost satellite of Jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days.What is the mass of Jupiter? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A)  1.33 × 1027 kg
B)  1.50 × 1027 kg
C)  1.72 × 1027 kg
D)  1.89 × 1027 kg
E)  3.08 × 1027 kg

Exam 12: Gravity

If you stood on a planet having a mass four times that of Earth's mass,and a radius two times that of Earth's radius,you would weigh

Correct Answer
verified

Mithra is an unknown planet that has two airless moons,A and B,in circular orbits around it.The table summarizes the hypothetical data about these moons.If you dropped a laser at the surface of Moon B,at what rate would it accelerate toward the ground? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

At a given point above Earth's surface,the acceleration due to gravity is equal to What is the altitude of this point above Earth's surface? (G = 6.67 × 10^-11 N ∙ m²/kg²,M_earth = 5.97 × 10²⁴ kg,R_earth = 6.38 × 10⁶ m)

Correct Answer
verified

What would be the weight of a 59.1-kg astronaut on a planet twice as massive as Earth and having twice Earth's radius?

Correct Answer
verified

The acceleration due to gravity on Planet A is one-sixth what it is on Planet B,and the radius of the Planet A is one-fourth that of Planet B.The mass of Planet A is what fraction of the mass of Planet B?

Correct Answer
verified

An object weighs 432 N on the surface of the earth.The earth has radius R.If the object is raised to a height of 3R above the earth's surface,what is its weight?

Correct Answer
verified

Two small objects,with masses m and M,are originally a distance r apart,and the gravitational force on each one has magnitude F.The second object has its mass changed to 2M,and the distance is changed to r/4.What is the magnitude of the new gravitational force?

Correct Answer
verified

The innermost satellite of Jupiter orbits the planet with a radius of 422 × 10³ km and a period of 1.77 days.What is the mass of Jupiter? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

What would be the weight of a 59.1-kg astronaut on a planet with the same density as Earth and having twice Earth's radius?

Correct Answer
verified

The mass of the Moon is 7.4 × 10²² kg,its radius is 1.74 × 10³ km,and it has no atmosphere.What is the acceleration due to gravity at the surface of the Moon? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Europa,a satellite of Jupiter,has an orbital diameter of 1.34 × 10⁹ m and a period of 3.55 days.What is the mass of Jupiter? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Correct Answer
verified

Suppose NASA wants a satellite to revolve around Earth 5 times a day.What should be the radius of its orbit if we neglect the presence of the Moon? (G = 6.67 × 10^-11 N ∙ m²/kg²,M_earth = 5.97 × 10²⁴ kg)

Correct Answer
verified

Exam 12: Gravity

If you stood on a planet having a mass four times that of Earth's mass,and a radius two times that of Earth's radius,you would weigh

Correct AnswerverifiedShow Answer

Mithra is an unknown planet that has two airless moons,A and B,in circular orbits around it.The table summarizes the hypothetical data about these moons.If you dropped a laser at the surface of Moon B,at what rate would it accelerate toward the ground? (G = 6.67 × 10-11 N ∙ m2/kg2)

Correct AnswerverifiedShow Answer

At a given point above Earth's surface,the acceleration due to gravity is equal to What is the altitude of this point above Earth's surface? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg,Rearth = 6.38 × 106 m)

Correct AnswerverifiedShow Answer

What would be the weight of a 59.1-kg astronaut on a planet twice as massive as Earth and having twice Earth's radius?

Correct AnswerverifiedShow Answer

The acceleration due to gravity on Planet A is one-sixth what it is on Planet B,and the radius of the Planet A is one-fourth that of Planet B.The mass of Planet A is what fraction of the mass of Planet B?

Correct AnswerverifiedShow Answer

An object weighs 432 N on the surface of the earth.The earth has radius R.If the object is raised to a height of 3R above the earth's surface,what is its weight?

Correct AnswerverifiedShow Answer

Two small objects,with masses m and M,are originally a distance r apart,and the gravitational force on each one has magnitude F.The second object has its mass changed to 2M,and the distance is changed to r/4.What is the magnitude of the new gravitational force?

Correct AnswerverifiedShow Answer

The innermost satellite of Jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days.What is the mass of Jupiter? (G = 6.67 × 10-11 N ∙ m2/kg2)

Correct AnswerverifiedShow Answer

What would be the weight of a 59.1-kg astronaut on a planet with the same density as Earth and having twice Earth's radius?

Correct AnswerverifiedShow Answer

The mass of the Moon is 7.4 × 1022 kg,its radius is 1.74 × 103 km,and it has no atmosphere.What is the acceleration due to gravity at the surface of the Moon? (G = 6.67 × 10-11 N ∙ m2/kg2)

Correct AnswerverifiedShow Answer

Europa,a satellite of Jupiter,has an orbital diameter of 1.34 × 109 m and a period of 3.55 days.What is the mass of Jupiter? (G = 6.67 × 10-11 N ∙ m2/kg2)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Suppose NASA wants a satellite to revolve around Earth 5 times a day.What should be the radius of its orbit if we neglect the presence of the Moon? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg)

Correct AnswerverifiedShow Answer

Correct Answer
verified

Mithra is an unknown planet that has two airless moons,A and B,in circular orbits around it.The table summarizes the hypothetical data about these moons.If you dropped a laser at the surface of Moon B,at what rate would it accelerate toward the ground? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

At a given point above Earth's surface,the acceleration due to gravity is equal to What is the altitude of this point above Earth's surface? (G = 6.67 × 10^-11 N ∙ m²/kg²,M_earth = 5.97 × 10²⁴ kg,R_earth = 6.38 × 10⁶ m)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

The innermost satellite of Jupiter orbits the planet with a radius of 422 × 10³ km and a period of 1.77 days.What is the mass of Jupiter? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Correct Answer
verified

The mass of the Moon is 7.4 × 10²² kg,its radius is 1.74 × 10³ km,and it has no atmosphere.What is the acceleration due to gravity at the surface of the Moon? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Europa,a satellite of Jupiter,has an orbital diameter of 1.34 × 10⁹ m and a period of 3.55 days.What is the mass of Jupiter? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Correct Answer
verified

Suppose NASA wants a satellite to revolve around Earth 5 times a day.What should be the radius of its orbit if we neglect the presence of the Moon? (G = 6.67 × 10^-11 N ∙ m²/kg²,M_earth = 5.97 × 10²⁴ kg)

Correct Answer
verified