Question 1

If v and t represent velocity and time, respectively, C1 in must

Accepted Answer

A)  have the dimensions L/T. 
B)  have the dimensions M. 
C)  have the dimensions L/T 2. 
D)  have the dimensions L2/T 2. 
E)  be dimensionless. 
A)  have the dimensions L/T. 
B)  have the dimensions M. 
C)  have the dimensions L/T 2. 
D)  have the dimensions L2/T 2. 
E)  be dimensionless.

Question 2

If K has dimensions ML2/T 2, the in K = mv 2 must

Accepted Answer

A)  have the dimensions ML/T 2. 
B)  have the dimensions M. 
C)  have the dimensions L/T 2. 
D)  have the dimensions L2/T 2. 
E)  be dimensionless. 
A)  have the dimensions ML/T 2. 
B)  have the dimensions M. 
C)  have the dimensions L/T 2. 
D)  have the dimensions L2/T 2. 
E)  be dimensionless.

Question 3

The mass of an electron is of the order of 10-30 kg and the mass of the universe is believed to be of the order of 1052 kg. From this information you can conclude that

Accepted Answer

A)  the mass of Earth is 52 orders of magnitude greater than that of the electron. 
B)  the mass of Earth is 30 orders of magnitude greater than that of the electron. 
C)  the mass of the electron is 82 orders of magnitude greater than that of Earth. 
D)  the mass of Earth is 82 orders of magnitude greater than that of the electron. 
E)  the mass of the electron is 30 orders of magnitude greater than that of Earth. 
A)  the mass of Earth is 52 orders of magnitude greater than that of the electron. 
B)  the mass of Earth is 30 orders of magnitude greater than that of the electron. 
C)  the mass of the electron is 82 orders of magnitude greater than that of Earth. 
D)  the mass of Earth is 82 orders of magnitude greater than that of the electron. 
E)  the mass of the electron is 30 orders of magnitude greater than that of Earth.

Question 4

A diehard music lover still prefers to listen to his vinyl records, which rotate at 331/3 revolutions per minute. If he listens for an average of three hours per day, estimate the order of magnitude for the number of revolutions his turntable makes in a year.

Accepted Answer

A)  107 
B)  102 
C)  106 
D)  105 
E)  104 
A)  107 
B)  102 
C)  106 
D)  105 
E)  104

Question 5

When multiplying or dividing numbers, the result has the same numbers of significant figures as the input number with fewest significant figures.

Accepted Answer

A) True 
 B)False

Question 6

The density of an object equals its mass divided by its volume. The mass of Earth is 6 * 1024 kg and its radius is 4*103 miles. The mass of the Sun is 2* 1033 g and its radius is 7 * 105 km. Determine the ratio of the Earth's density to that of the Sun.

Accepted Answer

A)  4 *10-1 
B)  4 * 102  
C)  4 * 100  
D)  4 *101 
E)  None of these choices 
A)  4 *10-1 
B)  4 * 102  
C)  4 * 100  
D)  4 *101 
E)  None of these choices

Question 7

The second is defined to be the amount of time required for a cesium atom to emit 9,192,631,770 cycles of radio waves. The number of significant digits in the quoted value is

Accepted Answer

A)  3. 
B)  6. 
C)  9. 
D)  10. 
E)  impossible to identify. 
A)  3. 
B)  6. 
C)  9. 
D)  10. 
E)  impossible to identify.

Question 8

To convert a quantity from km/h to m/s, you must

Accepted Answer

A)  multiply by 1000 and divide by 60. 
B)  multiply by 1000 and divide by 3600. 
C)  multiply by 60 and divide by 1000. 
D)  multiply by 3600 and divide by 1000. 
E)  None of these options are correct. 
A)  multiply by 1000 and divide by 60. 
B)  multiply by 1000 and divide by 3600. 
C)  multiply by 60 and divide by 1000. 
D)  multiply by 3600 and divide by 1000. 
E)  None of these options are correct.

Question 9

The prefix "giga" stands for

Accepted Answer

A)  1012.  
B)  106 . 
C)  103.  
D)  109. 
E)  1015. 
A)  1012.  
B)  106 . 
C)  103.  
D)  109. 
E)  1015.

Question 10

The prefix "mega" means

Accepted Answer

A)  102.  
B)  109.  
C)  10-3. 
D)  106. 
E)  10-6. 
A)  102.  
B)  109.  
C)  10-3. 
D)  106. 
E)  10-6.

Question 11

Density of styrofoam is . This number has

Accepted Answer

A)  1 significant digit. 
B)  2 significant digits. 
C)  3 significant digits. 
D)  4 significant digits. 
E)  5 significant digits. 
A)  1 significant digit. 
B)  2 significant digits. 
C)  3 significant digits. 
D)  4 significant digits. 
E)  5 significant digits.

Question 12

The momentum of a body is defined to be the product of its mass and its velocity. If the mass of an air-track glider is known to be 225 g and its velocity is measured to be 3.1 cm/s, its momentum should be reported as

Accepted Answer

A)  697.5 g · cm/s. 
B)  698 g · cm/s. 
C)  7.0 * 102 g · cm/s. 
D)  6.98 * 102 g · cm/s. 
E)  6.975 *102 g · cm/s. 
A)  697.5 g · cm/s. 
B)  698 g · cm/s. 
C)  7.0 * 102 g · cm/s. 
D)  6.98 * 102 g · cm/s. 
E)  6.975 *102 g · cm/s.

Question 13

When adding or subtracting numbers, the result should have the same number of digits to the right of the decimal point as the input number with the most digits to the right of the decimal point.

Accepted Answer

A) True 
 B)False

Question 14

The measurement 5.130 *10-4 has _____ significant figures.

Accepted Answer

A)  two 
B)  three 
C)  one 
D)  seven 
E)  four 
A)  two 
B)  three 
C)  one 
D)  seven 
E)  four

Question 15

Light travels at 3 *108 m/s, and it takes about 8 min for light from the sun to travel to Earth. Based on this, the order of magnitude of the distance from the sun to Earth is

Accepted Answer

A)  1010 m. 
B)  108 m. 
C)  109 m. 
D)  106 m. 
E)  1011 m. 
A)  1010 m. 
B)  108 m. 
C)  109 m. 
D)  106 m. 
E)  1011 m.

Question 16

To convert a quantity from m/s to km/h, you must

Accepted Answer

A)  multiply by 1000 and divide by 60. 
B)  multiply by 1000 and divide by 3600. 
C)  multiply by 60 and divide by 1000. 
D)  multiply by 3600 and divide by 1000. 
E)  None of these options are correct. 
A)  multiply by 1000 and divide by 60. 
B)  multiply by 1000 and divide by 3600. 
C)  multiply by 60 and divide by 1000. 
D)  multiply by 3600 and divide by 1000. 
E)  None of these options are correct.

Question 17

The prefix "pico" means

Accepted Answer

A)  10-12. 
B)  10-6.  
C)  10-3.  
D)  106. 
E)  109. 
A)  10-12. 
B)  10-6.  
C)  10-3.  
D)  106. 
E)  109.

Question 18

In Newton's law of gravity the universal gravitational constant is G = Fr2/m1m2, where F is the gravitational force between the two masses, m1 and m2, and r is the distance between them. What are the dimensions of G?

Accepted Answer

A)  L2M-1T 2.  
B)  L3M-1T -2 
C)  L2M-2T -2 
D)  L3M-1T 2.  
E)  L-3M1T 3. 
A)  L2M-1T 2.  
B)  L3M-1T -2 
C)  L2M-2T -2 
D)  L3M-1T 2.  
E)  L-3M1T 3.

Question 19

Which of the following prefixes does NOT represent a quantity larger than a single unit?

Accepted Answer

A)  kilo 
B)  mega 
C)  giga 
D)  tera 
E)  femto 
A)  kilo 
B)  mega 
C)  giga 
D)  tera 
E)  femto

Question 20

If Earth is approximately 4.5 billion years old, estimate the order of magnitude for the number of times it has rotated about its own axis. Assume a constant rate of rotation.)

Accepted Answer

A)  109 
B)  1010 
C)  1011 
D)  1012 
E)  1014 
A)  109 
B)  1010 
C)  1011 
D)  1012 
E)  1014

Exam 1: Introduction to Physics

If v and t represent velocity and time, respectively, C1 in must

If K has dimensions ML2/T 2, the in K = mv 2 must

The mass of an electron is of the order of 10-30 kg and the mass of the universe is believed to be of the order of 1052 kg. From this information you can conclude that

A diehard music lover still prefers to listen to his vinyl records, which rotate at 331/3 revolutions per minute. If he listens for an average of three hours per day, estimate the order of magnitude for the number of revolutions his turntable makes in a year.

When multiplying or dividing numbers, the result has the same numbers of significant figures as the input number with fewest significant figures.

The density of an object equals its mass divided by its volume. The mass of Earth is 6 * 1024 kg and its radius is 4*103 miles. The mass of the Sun is 2* 1033 g and its radius is 7 * 105 km. Determine the ratio of the Earth's density to that of the Sun.

The second is defined to be the amount of time required for a cesium atom to emit 9,192,631,770 cycles of radio waves. The number of significant digits in the quoted value is

To convert a quantity from km/h to m/s, you must

The prefix "giga" stands for

The prefix "mega" means

Density of styrofoam is . This number has

The momentum of a body is defined to be the product of its mass and its velocity. If the mass of an air-track glider is known to be 225 g and its velocity is measured to be 3.1 cm/s, its momentum should be reported as

When adding or subtracting numbers, the result should have the same number of digits to the right of the decimal point as the input number with the most digits to the right of the decimal point.

The measurement 5.130 *10-4 has _____ significant figures.

Light travels at 3 *108 m/s, and it takes about 8 min for light from the sun to travel to Earth. Based on this, the order of magnitude of the distance from the sun to Earth is

To convert a quantity from m/s to km/h, you must

The prefix "pico" means

In Newton's law of gravity the universal gravitational constant is G = Fr2/m1m2, where F is the gravitational force between the two masses, m1 and m2, and r is the distance between them. What are the dimensions of G?

Which of the following prefixes does NOT represent a quantity larger than a single unit?

If Earth is approximately 4.5 billion years old, estimate the order of magnitude for the number of times it has rotated about its own axis. Assume a constant rate of rotation.)

Linear Motion

Motion in Two and Three Dimensions

Forces and Motion I: Newtons Laws

Forces and Motion II: Applications

Work and Energy

Momentum, Collisions, and the Center of Mass

Rotational Motion

Elastic Properties of Matter: Stress and Strain

Gravitation

Fluids

Oscillations

Waves

Thermodynamics I

Thermodynamics II

Electrostatics I: Electric Charge, Forces, and Fields

Electrostatics II: Electric Potential Energy and Electric Potential

Electric Charges in Motion

Magnetism

Electromagnetic Induction

Alternating-Current Circuits

Electromagnetic Waves

Wave Properties of Light

Geometrical Optics

Relativity

Quantum Physics and Atomic Structure

Nuclear Physics

Particle Physics

Filters

If v and t represent velocity and time, respectively, C₁ in must

If K has dimensions ML²/T ², the in K = mv ² must

The mass of an electron is of the order of 10^-30 kg and the mass of the universe is believed to be of the order of 10⁵² kg. From this information you can conclude that

A diehard music lover still prefers to listen to his vinyl records, which rotate at 33^1/3 revolutions per minute. If he listens for an average of three hours per day, estimate the order of magnitude for the number of revolutions his turntable makes in a year.

The density of an object equals its mass divided by its volume. The mass of Earth is 6 * 10²⁴ kg and its radius is 410³ miles. The mass of the Sun is 2 10³³ g and its radius is 7 * 10⁵ km. Determine the ratio of the Earth's density to that of the Sun.

The measurement 5.130 *10^-4 has _____ significant figures.

Light travels at 3 *10⁸ m/s, and it takes about 8 min for light from the sun to travel to Earth. Based on this, the order of magnitude of the distance from the sun to Earth is

In Newton's law of gravity the universal gravitational constant is G = Fr²/m₁m₂, where F is the gravitational force between the two masses, m₁ and m₂, and r is the distance between them. What are the dimensions of G?