Question 1

What is the cosine of 45°?

Accepted Answer

A) 0.7 
B) 0.71 
C) 0.707 
D) 0.7071 
E) 0.70710 
A) 0.7 
B) 0.71 
C) 0.707 
D) 0.7071 
E) 0.70710 B

Question 2

How many significant figures are in 0.00054?

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 5 
E) 6 
A) 2 
B) 3 
C) 4 
D) 5 
E) 6 A

Question 3

How many significant figures are in 576,000?

Accepted Answer

A) 3 
B) 4 
C) 5 
D) 6 
E) ambiguous 
A) 3 
B) 4 
C) 5 
D) 6 
E) ambiguous E

Question 4

How many basic units does the SI system have?

Accepted Answer

A) three 
B) four 
C) five 
D) seven 
E) ten 
A) three 
B) four 
C) five 
D) seven 
E) ten

Question 5

List the SI base quantities.

Accepted Answer

Length, Time, Mass,

Question 6

A statement found to be experimentally valid over a wide range of observed phenomena is referred to as a

Accepted Answer

A) model. 
B) theory. 
C) law. 
D) principle. 
E) hypothesis. 
A) model. 
B) theory. 
C) law. 
D) principle. 
E) hypothesis.

Question 7

What is the conversion factor between cm2 and m2?

Accepted Answer

A) 0.01 m2/ cm2 
B) 0.0001 m2/ cm2 
C) 10 m2/ cm2 
D) 100 m2/ cm2 
E) 10000 m2/ cm2 
A) 0.01 m2/ cm2 
B) 0.0001 m2/ cm2 
C) 10 m2/ cm2 
D) 100 m2/ cm2 
E) 10000 m2/ cm2

Question 8

The base SI unit of length is

Accepted Answer

A) millimeter. 
B) centimeter. 
C) meter. 
D) kilometer. 
E) megameter. 
A) millimeter. 
B) centimeter. 
C) meter. 
D) kilometer. 
E) megameter.

Question 9

What precision should you expect for a quantity that you determine by estimation in which variables used in the calculation are rounded to the nearest power of ten?

Accepted Answer

A) Two significant figures will always be correct. 
B) the correct order of magnitude 
C) Anywhere from two to three significant figures will always be correct. 
D) One significant figure will always be correct. 
E) Three significant figures will always be correct. 
A) Two significant figures will always be correct. 
B) the correct order of magnitude 
C) Anywhere from two to three significant figures will always be correct. 
D) One significant figure will always be correct. 
E) Three significant figures will always be correct.

Question 10

Estimate the number of times Earth will rotate on its axis during a human's lifetime.

Accepted Answer

A) 3 × 104 
B) 3 × 105 
C) 3 × 106 
D) 3 × 107 
E) 3 x 108 
A) 3 × 104 
B) 3 × 105 
C) 3 × 106 
D) 3 × 107 
E) 3 x 108

Question 11

There is an uncertainty associated with every measurement.

Accepted Answer

A) True 
 B)False

Question 12

The metric prefix for one one-hundredth is

Accepted Answer

A) milli. 
B) centi. 
C) kilo. 
D) mega. 
E) giga. 
A) milli. 
B) centi. 
C) kilo. 
D) mega. 
E) giga.

Question 13

Four students measure the mass of an object, each using a different scale. They record their results as follows:   Which student used the most precise scale?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 14

Four students measure the mass of an object, each using a different scale. They record their results as follows:   Which student used the least precise scale?

Accepted Answer

A) A 
B) B 
C) C 
D) D 
E) E 
A) A 
B) B 
C) C 
D) D 
E) E

Question 15

Convert 4.5 × 10-3 to decimal notation.

Accepted Answer

A) 4.500 
B) 0.4500 
C) 0.0450 
D) 0.0045 
E) 0.00045 
A) 4.500 
B) 0.4500 
C) 0.0450 
D) 0.0045 
E) 0.00045

Question 16

The number of reliably known digits in a number is called the number of estimated uncertainty.

Accepted Answer

A) True 
 B)False

Question 17

A theory cannot be absolutely verified.

Accepted Answer

A) True 
 B)False

Question 18

What is the result of 2.43 ÷ 4.561?

Accepted Answer

A) 5.3278 × 10-1 
B) 5.328 × 10-1 
C) 5.33 × 10-1 
D) 5.3 × 10-1 
E) 5 × 10-1 
A) 5.3278 × 10-1 
B) 5.328 × 10-1 
C) 5.33 × 10-1 
D) 5.3 × 10-1 
E) 5 × 10-1

Question 19

In solving a physics problem you end up with m in the numerator and m/s in the denominator. The units for your answer are

Accepted Answer

A) m2/s. 
B) m2. 
C) m. 
D) s. 
E) 1/s. 
A) m2/s. 
B) m2. 
C) m. 
D) s. 
E) 1/s.

Question 20

How many significant figures are in 120.07?

Accepted Answer

A) 6 
B) 5 
C) 4 
D) 3 
E) 2 
A) 6 
B) 5 
C) 4 
D) 3 
E) 2

Exam 1: Introduction, Measurement, Estimating

What is the cosine of 45°?

How many significant figures are in 0.00054?

How many significant figures are in 576,000?

How many basic units does the SI system have?

List the SI base quantities.

A statement found to be experimentally valid over a wide range of observed phenomena is referred to as a

What is the conversion factor between cm2 and m2?

The base SI unit of length is

What precision should you expect for a quantity that you determine by estimation in which variables used in the calculation are rounded to the nearest power of ten?

Estimate the number of times Earth will rotate on its axis during a human's lifetime.

There is an uncertainty associated with every measurement.

The metric prefix for one one-hundredth is

Four students measure the mass of an object, each using a different scale. They record their results as follows: Which student used the most precise scale?

Four students measure the mass of an object, each using a different scale. They record their results as follows: Which student used the least precise scale?

Convert 4.5 × 10-3 to decimal notation.

The number of reliably known digits in a number is called the number of estimated uncertainty.

A theory cannot be absolutely verified.

What is the result of 2.43 ÷ 4.561?

In solving a physics problem you end up with m in the numerator and m/s in the denominator. The units for your answer are

How many significant figures are in 120.07?

Describing Motion: Kinematics in One Dimension

Kinematics in Two or Three Dimensions; Vectors

Dynamics: Newtons Laws of Motion

Using Newtons Laws: Friction, Circular Motion, Drag Forces

Gravitation and Newtons6 Synthesis

Work and Energy

Conservation of Energy

Linear Momentum

Rotational Motion

Angular Momentum; General Rotation

Static Equilibrium; Elasticity and Fracture

Fluids

Oscillations

Wave Motion

Sound

Temperature, Thermal Expansion, and the Ideal Gas Law

Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

Second Law of Thermodynamics

Electric Charge and Electric Field

Gausss Law

Electric Potential

Capacitance, Dielectrics, Electric Energy Storage

Electric Currents and Resistance

Dc Circuits

Magnetism

Sources of Magnetic Field

Electromagnetic Induction and Faradays Law

Inductance, Electromagnetic Oscillations, and Ac Circuits

Maxwells Equations and Electromagnetic Waves

Light: Reflection and Refraction

Lenses and Optical Instruments

The Wave Nature of Light; Interference

Diffraction and Polarization

Special Theory of Relativity

Early Quantum Theory and Models of the Atom

Quantum Mechanics

Quantum Mechanics of Atoms

Molecules and Solids

Nuclear Physics and Radioactivity

Nuclear Energy: Efects and Uses of Radiation

Elementary Particle

Astrophysics and Cosmology

Filters

What is the conversion factor between cm² and m²?

Convert 4.5 × 10^-³ to decimal notation.