Question 1

If the mass of the earth and all objects on it were suddenly doubled,but the size remained the same,the acceleration due to gravity at the surface would become

Accepted Answer

A)  4 times what it now is.
B)  2 times what it now is.
C)  the same as it now is.
D)  1/2 of what it now is.
E)  1/4 of what it now is.

Question 2

Jupiter completes one revolution about its own axis every 9.92 hours.What is the radius of the orbit required for a satellite to revolve about Jupiter with the same period? Jupiter has a mass of 1.90 × 1027 kg and G = 6.67 × 10-11 N ∙ m2/kg2.

Accepted Answer

A)  1.04 × 107 m
B)  2.26 × 109 m
C)  1.60 × 108 m
D)  3.41 × 108 m
E)  7.45 × 108 m

Question 3

A 910-kg object is released from rest at an altitude of 1200 km above the north pole of the earth.If we ignore atmospheric friction,with what speed does the object strike the surface of the earth? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg,the polar radius of the earth is 6357 km)

Accepted Answer

A)  4.5 km/s
B)  2.2 km/s
C)  2.7 km/s
D)  3.2 km/s
E)  4.8 km/s

Question 4

A planet has two small satellites in circular orbits around the planet.The first satellite has a period 12.0 hours and an orbital radius 6.00 × 107 m.The second planet has a period 16.0 hours.What is the orbital radius of the second satellite?

Accepted Answer

A)  4.50 × 107
B)  3.90 × 107
C)  9.24 × 107
D)  8.00 × 107
E)  7.27 × 107

Question 5

A satellite is in circular orbit at an altitude of 1500 km above the surface of a nonrotating planet with an orbital speed of 9.2 km/s.The minimum speed needed to escape from the surface of the planet is 14.9 km/s,and G = 6.67 × 10-11 N ∙ m2/kg2.The orbital period of the satellite is closest to

Accepted Answer

A)  72 min.
B)  65 min.
C)  58 min.
D)  51 min.
E)  44 min.

Question 6

Suppose we want a satellite to revolve around the earth 5 times a day.What should be the radius of its orbit? (The mass of the earth is 5.97 × 1024 kg,G = 6.67 × 10-11 N ∙ m2/kg2,and you can neglect the presence of the moon.)

Accepted Answer

A)  1.44 × 107 m
B)  0.690 × 107 m
C)  7.22 × 107 m
D)  2.11 × 107 m

Question 7

An object drops a distance h in a time of 6.3 s on the surface of the earth (neglecting air effects) .How long would it take the same object to drop the same distance on the surface of spherical asteroid X having a mass of 1.1 × 1022 kg and a radius of 4.0 × 105 m? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg,Rearth = 6.38 × 106 m)

Accepted Answer

A)  9.2 s
B)  6.3 s
C)  5.2 s
D)  12 s
E)  3.3 s

Question 8

A certain spherical asteroid has a mass of 3.5 × 1016 kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A)  23 m/s
B)  16 m/s
C)  520 m/s
D)  730 m/s

Question 9

A satellite of mass m has an orbital period T when it is in a circular orbit of radius R around the earth.If the satellite instead had mass 4m,its orbital period would be

Accepted Answer

A)  4T.
B)  2T.
C)  T.
D)  T/2.
E)  T/4.

Question 10

The radius of the earth is R.At what distance above the earth's surface will the acceleration of gravity be 4.9 m/s2?

Accepted Answer

A)  0.41R
B)  0.50R
C)  1.0R
D)  1.4R
E)  2.0R

Exam 13: Newtons Theory of Gravity

Correct Answer
verified

The radius of the earth is R.At what distance above the earth's surface will the acceleration of gravity be 4.9 m/s²?

Correct Answer
verified

A certain spherical asteroid has a mass of 3.5 × 10¹⁶ kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Correct Answer
verified

Suppose we want a satellite to revolve around the earth 5 times a day.What should be the radius of its orbit? (The mass of the earth is 5.97 × 10²⁴ kg,G = 6.67 × 10^-11 N ∙ m²/kg²,and you can neglect the presence of the moon.)

Correct Answer
verified

Jupiter completes one revolution about its own axis every 9.92 hours.What is the radius of the orbit required for a satellite to revolve about Jupiter with the same period? Jupiter has a mass of 1.90 × 10²⁷ kg and G = 6.67 × 10^-11 N ∙ m²/kg².

Correct Answer
verified

A satellite of mass m has an orbital period T when it is in a circular orbit of radius R around the earth.If the satellite instead had mass 4m,its orbital period would be

Correct Answer
verified

If the mass of the earth and all objects on it were suddenly doubled,but the size remained the same,the acceleration due to gravity at the surface would become

Correct Answer
verified

Correct Answer
verified

A planet has two small satellites in circular orbits around the planet.The first satellite has a period 12.0 hours and an orbital radius 6.00 × 10⁷ m.The second planet has a period 16.0 hours.What is the orbital radius of the second satellite?

Correct Answer
verified

Exam 13: Newtons Theory of Gravity

A 910-kg object is released from rest at an altitude of 1200 km above the north pole of the earth.If we ignore atmospheric friction,with what speed does the object strike the surface of the earth? (G = 6.67 × 10-11 N ∙ m2/kg2,Mearth = 5.97 × 1024 kg,the polar radius of the earth is 6357 km)

Correct AnswerverifiedShow Answer

The radius of the earth is R.At what distance above the earth's surface will the acceleration of gravity be 4.9 m/s2?

Correct AnswerverifiedShow Answer

A certain spherical asteroid has a mass of 3.5 × 1016 kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10-11 N ∙ m2/kg2)

Correct AnswerverifiedShow Answer

A satellite is in circular orbit at an altitude of 1500 km above the surface of a nonrotating planet with an orbital speed of 9.2 km/s.The minimum speed needed to escape from the surface of the planet is 14.9 km/s,and G = 6.67 × 10-11 N ∙ m2/kg2.The orbital period of the satellite is closest to

Correct AnswerverifiedShow Answer

Suppose we want a satellite to revolve around the earth 5 times a day.What should be the radius of its orbit? (The mass of the earth is 5.97 × 1024 kg,G = 6.67 × 10-11 N ∙ m2/kg2,and you can neglect the presence of the moon.)

Correct AnswerverifiedShow Answer

Jupiter completes one revolution about its own axis every 9.92 hours.What is the radius of the orbit required for a satellite to revolve about Jupiter with the same period? Jupiter has a mass of 1.90 × 1027 kg and G = 6.67 × 10-11 N ∙ m2/kg2.

Correct AnswerverifiedShow Answer

A satellite of mass m has an orbital period T when it is in a circular orbit of radius R around the earth.If the satellite instead had mass 4m,its orbital period would be

Correct AnswerverifiedShow Answer

If the mass of the earth and all objects on it were suddenly doubled,but the size remained the same,the acceleration due to gravity at the surface would become

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A planet has two small satellites in circular orbits around the planet.The first satellite has a period 12.0 hours and an orbital radius 6.00 × 107 m.The second planet has a period 16.0 hours.What is the orbital radius of the second satellite?

Correct AnswerverifiedShow Answer

Correct Answer
verified

The radius of the earth is R.At what distance above the earth's surface will the acceleration of gravity be 4.9 m/s²?

Correct Answer
verified

A certain spherical asteroid has a mass of 3.5 × 10¹⁶ kg and a radius of 8.8 km.What is the minimum speed needed to escape from the surface of this asteroid? (G = 6.67 × 10^-11 N ∙ m²/kg²)

Correct Answer
verified

Correct Answer
verified

Suppose we want a satellite to revolve around the earth 5 times a day.What should be the radius of its orbit? (The mass of the earth is 5.97 × 10²⁴ kg,G = 6.67 × 10^-11 N ∙ m²/kg²,and you can neglect the presence of the moon.)

Correct Answer
verified

Jupiter completes one revolution about its own axis every 9.92 hours.What is the radius of the orbit required for a satellite to revolve about Jupiter with the same period? Jupiter has a mass of 1.90 × 10²⁷ kg and G = 6.67 × 10^-11 N ∙ m²/kg².

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A planet has two small satellites in circular orbits around the planet.The first satellite has a period 12.0 hours and an orbital radius 6.00 × 10⁷ m.The second planet has a period 16.0 hours.What is the orbital radius of the second satellite?

Correct Answer
verified