Question 1

If you add two vectors with magnitudes of 200 and 40,which of the following is the only possible resultant?

Accepted Answer

A)  100 
B)  260 
C)  0 
D)  200 
E)  40 
A)  100 
B)  260 
C)  0 
D)  200 
E)  40

Question 2

Three objects experience interactions.Object A has mass,object B has electrical charge,and object C has both mass and electrical charge.Which of the following statements are true?

Accepted Answer

A)  object A and object B experience an electrical interaction 
B)  object A and object C experience a gravitational interaction 
C)  object C experiences an electrical interaction with itself 
D)  object A and object C experience an electrical interaction 
E)  object A and object B experience a gravitational interaction 
A)  object A and object B experience an electrical interaction 
B)  object A and object C experience a gravitational interaction 
C)  object C experiences an electrical interaction with itself 
D)  object A and object C experience an electrical interaction 
E)  object A and object B experience a gravitational interaction

Question 3

If an object of mass 20 kg on earth is sent to the moon it will have a mass of

Accepted Answer

A)  10 kg. 
B)  20 kg. 
C)  0.0 kg. 
D)  4.0 kg. 
A)  10 kg. 
B)  20 kg. 
C)  0.0 kg. 
D)  4.0 kg.

Question 4

A box is pushed across a horizontal table at constant speed.Of the forces on it,which pair do we know are equal in magnitude because of Newton's third law?

Accepted Answer

A)  Normal force on the box and the weight of the box. 
B)  Normal force on the box and the normal force on the table by the box. 
C)  The force of kinetic friction on the box and the force applied to the box by the one pushing it. 
D)  None of these are interaction pairs. 
A)  Normal force on the box and the weight of the box. 
B)  Normal force on the box and the normal force on the table by the box. 
C)  The force of kinetic friction on the box and the force applied to the box by the one pushing it. 
D)  None of these are interaction pairs.

Question 5

The tallest spot on Earth is Mt.Everest,which is 8850 m above sea level.If the radius of the Earth to sea level is 6370 km,how much does the magnitude of g change between sea level and the top of Mt.Everest?

Accepted Answer

A)  0.0030 m/s2 
B)  0.020 m/s2 
C)  0.035 m/s2 
D)  0.025 m/s2 
E)  0.030 m/s2 
A)  0.0030 m/s2 
B)  0.020 m/s2 
C)  0.035 m/s2 
D)  0.025 m/s2 
E)  0.030 m/s2

Question 6

An airplane is flying in horizontal flight at a constant velocity.The weight of the airplane is 40,000 N.The wings produce a lift force that is perpendicular to the wings and a drag force that is parallel to the wing.The engine produces a forward thrust force of 2,000 N.Which of the following statements is true?

Accepted Answer

A)  the net force on the airplane is zero 
B)  the net force on the airplane is forward 
C)  the net force on the airplane is upward 
D)  the net force on the airplane is downward 
E)  the net force on the airplane is backward 
A)  the net force on the airplane is zero 
B)  the net force on the airplane is forward 
C)  the net force on the airplane is upward 
D)  the net force on the airplane is downward 
E)  the net force on the airplane is backward

Question 7

A force of 15.2 N directed along the positive x-axis combines with a second force to produce a total force vector of magnitude 17.9 N.What is the magnitude of the second vector?

Accepted Answer

A)  Not enough information is given. 
B)  9.5 N 
C)  23.5 N 
D)  2.7 N 
A)  Not enough information is given. 
B)  9.5 N 
C)  23.5 N 
D)  2.7 N

Question 8

The moon with a mass of 7.35 $\times$ 1022 kg is orbiting about the earth with a mass of 5.98 $\times$ 1024 kg at a radius of 3.85 $\times$ 108 meters.The earth is orbiting about the sun with a mass of 1.99 $\times$ 1030 kg at a radius of 1.50 $\times$ 1011 meters.The gravitational field on the moon due to the earth and the sun when it is between them is (G = 6.67 $\times$ 10-11 N m2/kg2)

Accepted Answer

A)  5.93 $\times$ 10-3 N/kg toward the sun. 
B)  5.93 $\times$ 10-3 N/kg toward the earth. 
C)  3.21 $\times$ 10-3 N/kg toward the sun. 
D)  3.21 $\times$ 10-3 N/kg toward the earth. 
E)  2.69 $\times$ 10-3 N/kg toward the earth. 
A)  5.93 $\times$ 10-3 N/kg toward the sun. 
B)  5.93 $\times$ 10-3 N/kg toward the earth. 
C)  3.21 $\times$ 10-3 N/kg toward the sun. 
D)  3.21 $\times$ 10-3 N/kg toward the earth. 
E)  2.69 $\times$ 10-3 N/kg toward the earth.

Question 9

Which of the following is a vector quantity?

Accepted Answer

A)  volume 
B)  force 
C)  speed 
D)  time 
E)  length 
A)  volume 
B)  force 
C)  speed 
D)  time 
E)  length

Question 10

An airplane flies at a constant speed at an angle of 25 degrees above the horizontal.Which statement below is not true?

Accepted Answer

A)  The net force on the plane is zero. 
B)  The lift is the same magnitude as the weight. 
C)  The plane has a constant velocity. 
D)  The thrust is greater in magnitude than the drag. 
A)  The net force on the plane is zero. 
B)  The lift is the same magnitude as the weight. 
C)  The plane has a constant velocity. 
D)  The thrust is greater in magnitude than the drag.

Question 11

Given that a force vector extends from the origin to (120 N,-60.0 N),find the magnitude of the vector.

Accepted Answer

A)  140 N 
B)  134 N 
C)  180 N 
D)  60.0 N 
A)  140 N 
B)  134 N 
C)  180 N 
D)  60.0 N

Question 12

Vector A has a magnitude of 3.0 units and makes an angle of $-90.0^{\circ}$ with the positive x-axis.Vector B has a magnitude of 4.0 units and makes an angle of $-120^{\circ}$ with the positive x-axis.What is the magnitude of the vector sum of A + B?

Accepted Answer

A)  1.0 units 
B)  6.8 units 
C)  4.0 units 
D)  -6.8 units 
A)  1.0 units 
B)  6.8 units 
C)  4.0 units 
D)  -6.8 units

Question 13

Your friend applies a horizontal force to your 2.0-kg physics textbook,which rests stationary against a vertical wall.The static and kinetic friction coefficients between the book and the wall are 0.20 and 0.15,respectively.With what force must your friend push on the book in order that it doesn't slip down the wall?

Accepted Answer

A)  39 N 
B)  20 N 
C)  19.6 N 
D)  25 N 
E)  98 N 
A)  39 N 
B)  20 N 
C)  19.6 N 
D)  25 N 
E)  98 N

Question 14

Five children are pushing on a snowball; each is pushing with a force of 10.0 N.Each is pushing at an angle of $45^{\circ}$ relative to his neighbor.What is the net push on the ball?

Accepted Answer

A)  0 N 
B)  24.1 N 
C)  27.1 N 
D)  17 N 
E)  50 N 
A)  0 N 
B)  24.1 N 
C)  27.1 N 
D)  17 N 
E)  50 N

Question 15

A rope is connected to a scale on the left and exerts a force T1 and a rope is connected to the same scale on the right and exerts a force T2. The scale shows a reading of Ts = 120 N.The values of T1 and T2 are

Accepted Answer

A)  T1 = 80 N,and T2 = 80 N. 
B)  T1 = 120 N,and T2 = 120 N. 
C)  T1 = 240 N,and T2 = 240 N. 
D)  T1 = 80 N,and T2 = 120 N. 
A)  T1 = 80 N,and T2 = 80 N. 
B)  T1 = 120 N,and T2 = 120 N. 
C)  T1 = 240 N,and T2 = 240 N. 
D)  T1 = 80 N,and T2 = 120 N.

Question 16

A mass sits at rest on top of a table.Which two forces are interaction pair forces and thus are equal and opposite?

Accepted Answer

A)  the force of gravity on the mass due to the earth and the force of gravity on the earth due to the mass 
B)  the force of gravity on the mass due to the earth and the contact force on the table due to the mass 
C)  the contact force on the mass due to the table and the force of gravity on the earth due to the mass 
D)  the force of gravity on the mass due to the earth and the contact force on the mass due to the table 
A)  the force of gravity on the mass due to the earth and the force of gravity on the earth due to the mass 
B)  the force of gravity on the mass due to the earth and the contact force on the table due to the mass 
C)  the contact force on the mass due to the table and the force of gravity on the earth due to the mass 
D)  the force of gravity on the mass due to the earth and the contact force on the mass due to the table

Question 17

The diagram below represents an ideal pulley system (no mass or friction).What is the force required to lift the 45 kg mass?

Accepted Answer

A)  442 N 
B)  393 N 
C)  221 N 
D)  147 N 
A)  442 N 
B)  393 N 
C)  221 N 
D)  147 N

Question 18

In the figure,an airport luggage carrying train with a tractor T is pulling three luggage carts,M1,M2,and M3.with constant velocity of 4.5 m/s.If T = 300 kg,M1 = 200 kg,M2 = 100 kg,and M3 = 100 kg (there is no friction),then the force in the connection between the tractor T and cart M1 is

Accepted Answer

A)  980 N. 
B)  560 N. 
C)  280 N. 
D)  140 N. 
E)  0.00 N. 
A)  980 N. 
B)  560 N. 
C)  280 N. 
D)  140 N. 
E)  0.00 N.

Question 19

The gravitational field on the surface of the earth is (G = 6.67 $\times$ 10-11 N m2/kg2,mass of the earth is 5.98 $\times$ 1024 kg,radius of the earth is 6.38 $\times$ 106 meters)

Accepted Answer

A)  3.40 N/kg. 
B)  6.20 N/kg. 
C)  9.80 N/kg. 
D)  10.1 N/kg. 
E)  20.3 N/kg. 
A)  3.40 N/kg. 
B)  6.20 N/kg. 
C)  9.80 N/kg. 
D)  10.1 N/kg. 
E)  20.3 N/kg.

Question 20

The moon with a mass of 7.35 $\times$ 1022 kg is orbiting about the earth with a mass of 5.98 $\times$ 1024 kg at a radius of 3.85 $\times$ 108 meters.The force of gravity on the moon due to the earth is (G = 6.67 $\times$ 10-11 N m2/kg2)

Accepted Answer

A)  9.20 $\times$ 1030 N. 
B)  3.20 $\times$ 1028 N. 
C)  6.70 $\times$ 1024 N. 
D)  1.98 $\times$ 1020 N. 
E)  4.10 $\times$ 1012 N. 
A)  9.20 $\times$ 1030 N. 
B)  3.20 $\times$ 1028 N. 
C)  6.70 $\times$ 1024 N. 
D)  1.98 $\times$ 1020 N. 
E)  4.10 $\times$ 1012 N.

Exam 2: Force

If you add two vectors with magnitudes of 200 and 40,which of the following is the only possible resultant?

Three objects experience interactions.Object A has mass,object B has electrical charge,and object C has both mass and electrical charge.Which of the following statements are true?

If an object of mass 20 kg on earth is sent to the moon it will have a mass of

A box is pushed across a horizontal table at constant speed.Of the forces on it,which pair do we know are equal in magnitude because of Newton's third law?

The tallest spot on Earth is Mt.Everest,which is 8850 m above sea level.If the radius of the Earth to sea level is 6370 km,how much does the magnitude of g change between sea level and the top of Mt.Everest?

A force of 15.2 N directed along the positive x-axis combines with a second force to produce a total force vector of magnitude 17.9 N.What is the magnitude of the second vector?

Which of the following is a vector quantity?

An airplane flies at a constant speed at an angle of 25 degrees above the horizontal.Which statement below is not true?

Given that a force vector extends from the origin to (120 N,-60.0 N),find the magnitude of the vector.

Vector A has a magnitude of 3.0 units and makes an angle of −90.0∘-90.0^{\circ}−90.0∘ with the positive x-axis.Vector B has a magnitude of 4.0 units and makes an angle of −120∘-120^{\circ}−120∘ with the positive x-axis.What is the magnitude of the vector sum of A + B?

Five children are pushing on a snowball; each is pushing with a force of 10.0 N.Each is pushing at an angle of 45∘45^{\circ}45∘ relative to his neighbor.What is the net push on the ball?

A rope is connected to a scale on the left and exerts a force T1 and a rope is connected to the same scale on the right and exerts a force T2. The scale shows a reading of Ts = 120 N.The values of T1 and T2 are

A mass sits at rest on top of a table.Which two forces are interaction pair forces and thus are equal and opposite?

The diagram below represents an ideal pulley system (no mass or friction).What is the force required to lift the 45 kg mass?

In the figure,an airport luggage carrying train with a tractor T is pulling three luggage carts,M1,M2,and M3.with constant velocity of 4.5 m/s.If T = 300 kg,M1 = 200 kg,M2 = 100 kg,and M3 = 100 kg (there is no friction),then the force in the connection between the tractor T and cart M1 is

The gravitational field on the surface of the earth is (G = 6.67 ×\times× 10-11 N m2/kg2,mass of the earth is 5.98 ×\times× 1024 kg,radius of the earth is 6.38 ×\times× 106 meters)

The moon with a mass of 7.35 ×\times× 1022 kg is orbiting about the earth with a mass of 5.98 ×\times× 1024 kg at a radius of 3.85 ×\times× 108 meters.The force of gravity on the moon due to the earth is (G = 6.67 ×\times× 10-11 N m2/kg2)

Introduction

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

Circular Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

Vector A has a magnitude of 3.0 units and makes an angle of $-90.0^{\circ}$ with the positive x-axis.Vector B has a magnitude of 4.0 units and makes an angle of $-120^{\circ}$ with the positive x-axis.What is the magnitude of the vector sum of A + B?

Five children are pushing on a snowball; each is pushing with a force of 10.0 N.Each is pushing at an angle of $45^{\circ}$ relative to his neighbor.What is the net push on the ball?

A rope is connected to a scale on the left and exerts a force T₁ and a rope is connected to the same scale on the right and exerts a force T_2. The scale shows a reading of T_s = 120 N.The values of T₁ and T₂ are

The gravitational field on the surface of the earth is (G = 6.67 $\times$ 10^-11 N m²/kg²,mass of the earth is 5.98 $\times$ 10²⁴ kg,radius of the earth is 6.38 $\times$ 10⁶ meters)

The moon with a mass of 7.35 $\times$ 10²² kg is orbiting about the earth with a mass of 5.98 $\times$ 10²⁴ kg at a radius of 3.85 $\times$ 10⁸ meters.The force of gravity on the moon due to the earth is (G = 6.67 $\times$ 10^-11 N m²/kg²)