Question 1

A jet plane flying 600 m/s experiences an acceleration of 4.0 g when pulling out of the circular section of a dive.What is the radius of curvature of this section of the dive?

Accepted Answer

A) 1.2 km 
B) 5.8 km 
C) 0.64 km 
D) 9.2 km 
E) 7.0 km 
A) 1.2 km 
B) 5.8 km 
C) 0.64 km 
D) 9.2 km 
E) 7.0 km

Question 2

If Earth had twice its present mass but it orbited at the same distance from the sun as it does now,its orbital period would be

Accepted Answer

A) 4 years. 
B) 3 years. 
C) 2 years. 
D) 1 year. 
E) 6 months. 
A) 4 years. 
B) 3 years. 
C) 2 years. 
D) 1 year. 
E) 6 months.

Question 3

When a car goes around a circular curve on a horizontal road at constant speed,what force causes it to follow the circular path?

Accepted Answer

A) the normal force exerted on the car by the road perpendicular to the road 
B) the friction force exerted by the road on the car 
C) the force that Earth exerts on the car 
D) No force causes the car to do this because the car is traveling at constant speed and therefore has no acceleration. 
A) the normal force exerted on the car by the road perpendicular to the road 
B) the friction force exerted by the road on the car 
C) the force that Earth exerts on the car 
D) No force causes the car to do this because the car is traveling at constant speed and therefore has no acceleration.

Question 4

A race car traveling at a constant speed of 50 m/s drives around a circular track that is 500 m in diameter.What is the magnitude of the acceleration of the car?

Accepted Answer

A) 0 m/s2 
B) 1.0 m/s2 
C) 10 m/s2 
D) 0.63 m/s2 
E) 2.2 m/s2 
A) 0 m/s2 
B) 1.0 m/s2 
C) 10 m/s2 
D) 0.63 m/s2 
E) 2.2 m/s2

Question 5

A highway curve of radius 100 m,banked at an angle of 45°,may be negotiated without friction at a speed of

Accepted Answer

A) 22 m/s. 
B) 31 m/s. 
C) 44 m/s. 
D) 67 m/s. 
A) 22 m/s. 
B) 31 m/s. 
C) 44 m/s. 
D) 67 m/s.

Question 6

A 2.10-kg hammer is transported to the Moon.The radius of the Moon is 1.74 × 106 m,its mass is 7.35 × 1022 kg,and G = 6.67 × 10-11 N ∙ m2/kg2.What is the gravitational force exerted on the hammer on Earth and on the Moon?

Accepted Answer

20.6 N (on

Question 7

You are making a circular turn in your car on a horizontal road when you hit a big patch of ice,causing the force of friction between the tires and the road to become zero.While the car is on the ice,it

Accepted Answer

A) moves along a straight-line path away from the center of the circle. 
B) moves along a straight-line path toward the center of the circle. 
C) moves along a straight-line path in its original direction. 
D) continues to follow a circular path, but with a radius larger than the original radius. 
E) moves along a path that is neither straight nor circular. 
A) moves along a straight-line path away from the center of the circle. 
B) moves along a straight-line path toward the center of the circle. 
C) moves along a straight-line path in its original direction. 
D) continues to follow a circular path, but with a radius larger than the original radius. 
E) moves along a path that is neither straight nor circular.

Question 8

Planet Z-34 has a mass equal to one-third that of Earth and a radius equal to one-third that of Earth.With g representing,as usual,the free-fall acceleration at the surface of Earth,the free-fall acceleration at the surface of Z-34 is

Accepted Answer

A) g/3. 
B) 3g. 
C) 6g. 
D) g/9. 
E) 9g. 
A) g/3. 
B) 3g. 
C) 6g. 
D) g/9. 
E) 9g.

Question 9

Satellite A has twice the mass of satellite B,and moves at the same orbital distance from Earth as satellite B.Compare the speeds of the two satellites.

Accepted Answer

A) The speed of B is twice the speed of A. 
B) The speed of B is one-half the speed of A. 
C) The speed of B is one-fourth the speed of A. 
D) The speed of B is equal to the speed of A. 
E) The speed of B is four times the speed of A. 
A) The speed of B is twice the speed of A. 
B) The speed of B is one-half the speed of A. 
C) The speed of B is one-fourth the speed of A. 
D) The speed of B is equal to the speed of A. 
E) The speed of B is four times the speed of A.

Question 10

$$\begin{array} { | l | c | c | c | c | } 
\hline & \text { Mass } & \text { Radius } & \text { Orbital radius } & \text { Orbital period } \
\hline \text { Moon A } & 4.0 \times 10 ^ { 20 } \mathrm {~kg} & \text { unknown } & 2.0 \times 10 ^ { 8 } \mathrm {~m} & 4.0 \times 10 ^ { 6 } \mathrm {~s} \
\hline \text { Moon B } & 1.5 \times 10 ^ { 2 } 0 \mathrm {~kg} & 2.0 \times 10 ^ { 5 } \mathrm {~m} & 3.0 \times 10 ^ { 8 } \mathrm {~m} & \text { unknown } \
\hline
\end{array}$$ Mithra is an unknown planet that has two moons,A and B,in circular orbits around it.The table summarizes the hypothetical data about these moons.What is the mass of Mithra? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A) 1 × 1022 kg 
B) 3 × 1022 kg 
C) 1 × 1023 kg 
D) 3 × 1023 kg 
E) 1 × 1024 kg 
A) 1 × 1022 kg 
B) 3 × 1022 kg 
C) 1 × 1023 kg 
D) 3 × 1023 kg 
E) 1 × 1024 kg

Question 11

The maximum acceleration a pilot can stand without blacking out is about 7.0 g.In an endurance test for a jet plane's pilot,what is the maximum speed he can tolerate if he is spun in a horizontal circle of diameter 85 m?

Accepted Answer

The answer of The maximum acceleration a pilot can stand...

Question 12

A 1000-kg car is slowly picking up speed as it goes around a horizontal unbanked curve whose radius is 100 m.The coefficient of static friction between the tires and the road is 0.35.At what speed will the car begin to skid sideways?

Accepted Answer

A) 9.3 m/s 
B) 24 m/s 
C) 34 m/s 
D) 35 m/s 
E) 19 m/s 
A) 9.3 m/s 
B) 24 m/s 
C) 34 m/s 
D) 35 m/s 
E) 19 m/s

Question 13

Two planets have the same free-fall acceleration on the surface,but planet B has twice the radius of planet A.If planet A has mass m,what is the mass of planet B?

Accepted Answer

A) m/ $\sqrt { 2 }$ 
B) m 
C) m $\sqrt { 2 }$ 
D) 4m 
E) m/4 
A) m/ $\sqrt { 2 }$ 
B) m 
C) m $\sqrt { 2 }$ 
D) 4m 
E) m/4

Question 14

Halley's Comet is in a highly elliptical orbit around the sun.Therefore the orbital speed of Halley's Comet,while traveling around the sun,

Accepted Answer

A) is constant. 
B) increases as it nears the Sun. 
C) decreases as it nears the Sun. 
D) is zero at two points in the orbit. 
A) is constant. 
B) increases as it nears the Sun. 
C) decreases as it nears the Sun. 
D) is zero at two points in the orbit.

Question 15

A child sits on a merry-go-round,1.5 meters from the center.The merry-go-round is turning at a constant rate,and the child is observed to have a radial acceleration of 2.3 m/s2.How long does it take for the merry-go-round to make one revolution?

Accepted Answer

Question 16

In another solar system,a planet has an airless moon Zygo that is 4.0 × 105 m in diameter.Experiments reveal that a freely falling object at the surface of Zygo accelerates at 0.20 m/s2.What is the mass of Zygo? (G = 6.67 × 10-11 N ∙ m2/kg2)

Accepted Answer

A) 2.4 × 1019 kg 
B) 4.8 × 1019 kg 
C) 1.2 × 1020 kg 
D) 2.4 × 1020 kg 
E) 4.8 × 1020 kg 
A) 2.4 × 1019 kg 
B) 4.8 × 1019 kg 
C) 1.2 × 1020 kg 
D) 2.4 × 1020 kg 
E) 4.8 × 1020 kg

Question 17

In a carnival ride,passengers stand with their backs against the wall of a cylinder.The cylinder is set into rotation and the floor is lowered away from the passengers,but they remain stuck against the wall of the cylinder.For a cylinder with a 2.0-m radius,what is the minimum speed that the passengers can have so they do not fall if the coefficient of static friction between the passengers and the wall is 0.25?

Accepted Answer

A) 8.9 m/s 
B) 2.3 m/s 
C) 3.0 m/s 
D) 4.9 m/s 
E) It depends on the mass of the passengers. 
A) 8.9 m/s 
B) 2.3 m/s 
C) 3.0 m/s 
D) 4.9 m/s 
E) It depends on the mass of the passengers.

Question 18

Pulling out of a dive,the pilot of an airplane guides his plane into a vertical circle with a radius of 600 m.At the bottom of the dive,the speed of the airplane is 150 m/s.What is the apparent weight (the force that the pilot exerts on the seat)of the 70-kg pilot at that point?

Accepted Answer

A) 3300 N 
B) 690 N 
C) 2600 N 
D) 490 N 
E) 1400 N 
A) 3300 N 
B) 690 N 
C) 2600 N 
D) 490 N 
E) 1400 N

Question 19

When a car goes around a banked circular curve at the proper speed for the banking angle,what force cause it to follow the circular path?

Accepted Answer

A) the normal force exerted by the road on the car perpendicular to the road's surface 
B) the friction force exerted by the road on the car 
C) the force that Earth exerts on the car 
D) No force causes the car to do this because the car is traveling at constant speed and therefore has no acceleration. 
A) the normal force exerted by the road on the car perpendicular to the road's surface 
B) the friction force exerted by the road on the car 
C) the force that Earth exerts on the car 
D) No force causes the car to do this because the car is traveling at constant speed and therefore has no acceleration.

Question 20

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 
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 5: Circular Motion

A jet plane flying 600 m/s experiences an acceleration of 4.0 g when pulling out of the circular section of a dive.What is the radius of curvature of this section of the dive?

If Earth had twice its present mass but it orbited at the same distance from the sun as it does now,its orbital period would be

When a car goes around a circular curve on a horizontal road at constant speed,what force causes it to follow the circular path?

A race car traveling at a constant speed of 50 m/s drives around a circular track that is 500 m in diameter.What is the magnitude of the acceleration of the car?

A highway curve of radius 100 m,banked at an angle of 45°,may be negotiated without friction at a speed of

A 2.10-kg hammer is transported to the Moon.The radius of the Moon is 1.74 × 106 m,its mass is 7.35 × 1022 kg,and G = 6.67 × 10-11 N ∙ m2/kg2.What is the gravitational force exerted on the hammer on Earth and on the Moon?

You are making a circular turn in your car on a horizontal road when you hit a big patch of ice,causing the force of friction between the tires and the road to become zero.While the car is on the ice,it

Planet Z-34 has a mass equal to one-third that of Earth and a radius equal to one-third that of Earth.With g representing,as usual,the free-fall acceleration at the surface of Earth,the free-fall acceleration at the surface of Z-34 is

Satellite A has twice the mass of satellite B,and moves at the same orbital distance from Earth as satellite B.Compare the speeds of the two satellites.

The maximum acceleration a pilot can stand without blacking out is about 7.0 g.In an endurance test for a jet plane's pilot,what is the maximum speed he can tolerate if he is spun in a horizontal circle of diameter 85 m?

A 1000-kg car is slowly picking up speed as it goes around a horizontal unbanked curve whose radius is 100 m.The coefficient of static friction between the tires and the road is 0.35.At what speed will the car begin to skid sideways?

Two planets have the same free-fall acceleration on the surface,but planet B has twice the radius of planet A.If planet A has mass m,what is the mass of planet B?

Halley's Comet is in a highly elliptical orbit around the sun.Therefore the orbital speed of Halley's Comet,while traveling around the sun,

A child sits on a merry-go-round,1.5 meters from the center.The merry-go-round is turning at a constant rate,and the child is observed to have a radial acceleration of 2.3 m/s2.How long does it take for the merry-go-round to make one revolution?

In another solar system,a planet has an airless moon Zygo that is 4.0 × 105 m in diameter.Experiments reveal that a freely falling object at the surface of Zygo accelerates at 0.20 m/s2.What is the mass of Zygo? (G = 6.67 × 10-11 N ∙ m2/kg2)

Pulling out of a dive,the pilot of an airplane guides his plane into a vertical circle with a radius of 600 m.At the bottom of the dive,the speed of the airplane is 150 m/s.What is the apparent weight (the force that the pilot exerts on the seat)of the 70-kg pilot at that point?

When a car goes around a banked circular curve at the proper speed for the banking angle,what force cause it to follow the circular path?

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)

Introduction

Kinematics: Motion in One Dimension

Newtonian Mechanics

Applying Newtons Laws

Impulse and Linear Momentum

Work and Energy

Extended Bodies at Rest

Rotational Motion

Gases

Static Fluids

Fluids in Motion

First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge force and Energy

The Electric Field

Dc Circuits

Magnetism

Electromagnetic Induction

Vibrational Motion

Mechanical Waves

Reflection and Refraction

Mirrors and Lenses

Wave Optics

Electromagnetic Waves

Special Relativity

Quantum Optics

Atomic Physics

Nuclear Physics

Particle Physics

Filters

A 2.10-kg hammer is transported to the Moon.The radius of the Moon is 1.74 × 10⁶ m,its mass is 7.35 × 10²² kg,and G = 6.67 × 10^-11 N ∙ m²/kg².What is the gravitational force exerted on the hammer on Earth and on the Moon?

A child sits on a merry-go-round,1.5 meters from the center.The merry-go-round is turning at a constant rate,and the child is observed to have a radial acceleration of 2.3 m/s².How long does it take for the merry-go-round to make one revolution?

In another solar system,a planet has an airless moon Zygo that is 4.0 × 10⁵ m in diameter.Experiments reveal that a freely falling object at the surface of Zygo accelerates at 0.20 m/s².What is the mass of Zygo? (G = 6.67 × 10^-11 N ∙ m²/kg²)

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)