Question 1

Accuracy refers to the repeatability of a measurement using a given instrument.

Accepted Answer

A) True 
 B)False

Question 2

Select the list which contains only SI basic units.

Accepted Answer

A) liter, meter, second, watt 
B) joule, kelvin, kilogram, watt 
C) candela, kelvin, meter, second 
D) joule, newton, second, watt 
E) candela, joule, second, meter 
A) liter, meter, second, watt 
B) joule, kelvin, kilogram, watt 
C) candela, kelvin, meter, second 
D) joule, newton, second, watt 
E) candela, joule, second, meter

Question 3

Power is defined as the rate of work per time, power = work/time. If the dimensions of power are [ML2T-3], what are the dimensions of work?

Accepted Answer

A) [MLT-3] 
B) [ML2T-1] 
C) [ML3T-3] 
D) [ML2T-2] 
E) [ML2T-4] 
A) [MLT-3] 
B) [ML2T-1] 
C) [ML3T-3] 
D) [ML2T-2] 
E) [ML2T-4]

Question 4

State the general rule for significant figures when multiplying or dividing numbers.

Accepted Answer

The final result of a multipli

Question 5

When subtracting several quantities, the number of decimal places in the result must always be

Accepted Answer

A) larger than the number of decimal places in the most accurate of the quantities. 
B) equal to the number of decimal places in the most accurate of the quantities. 
C) equal to the average number of significant digits in the most and least accurate of the quantities. 
D) equal to the number of decimal places in the least accurate of the quantities. 
E) smaller than the number of decimal places in the least accurate of the quantities. 
A) larger than the number of decimal places in the most accurate of the quantities. 
B) equal to the number of decimal places in the most accurate of the quantities. 
C) equal to the average number of significant digits in the most and least accurate of the quantities. 
D) equal to the number of decimal places in the least accurate of the quantities. 
E) smaller than the number of decimal places in the least accurate of the quantities.

Question 6

The period of a pendulum is the time it takes the pendulum to swing back and forth once. If the only dimensional quantities that the period depends on are the acceleration of gravity, g, and the length of the pendulum, L, what combination of g and L must the period be proportional to? Acceleration has dimensions of [L][T-2].

Accepted Answer

A) g/L 
B) gL2  
C) gL 
D)    
E)    
A) g/L 
B) gL2  
C) gL 
D)    
E)

Question 7

Dimensional analysis can tell you whether an equation is physically correct.

Accepted Answer

A) True 
 B)False

Question 8

What is 34 + ( 4) × (1.2465) written with the correct number of significant figures?

Accepted Answer

A) 39.0 
B) 38.99 
C) 4 × 101  
D) 39 
E) 38.986 
A) 39.0 
B) 38.99 
C) 4 × 101  
D) 39 
E) 38.986

Question 9

A useful method of expressing very small or very large numbers is

Accepted Answer

A) scientific notation. 
B) arabic numerals. 
C) roman numerals. 
D) significant figures. 
E) greek letters. 
A) scientific notation. 
B) arabic numerals. 
C) roman numerals. 
D) significant figures. 
E) greek letters.

Question 10

How many seconds in 5.24 days?

Accepted Answer

A) 3.77 × 103 s 
B) 4.98 × 107 s 
C) 4.53 × 105 s 
D) 2.26 × 105 s 
E) 7.55 × 103 s 
A) 3.77 × 103 s 
B) 4.98 × 107 s 
C) 4.53 × 105 s 
D) 2.26 × 105 s 
E) 7.55 × 103 s

Question 11

Write out the number 9.45 × 10-5 in full with a decimal point and correct number of zeros.

Accepted Answer

A) 0.00000945 
B) 0.0000945 
C) 0.000945 
D) 0.00945 
E) 0.0945 
A) 0.00000945 
B) 0.0000945 
C) 0.000945 
D) 0.00945 
E) 0.0945

Question 12

List the SI base units.

Accepted Answer

meter, second, kilog

Question 13

How many minutes is 182 days?

Accepted Answer

A) 1.31 × 105 min 
B) 2.62 × 105 min 
C) 7.86 × 107 min 
D) 1.57 × 107 min 
E) 127 min 
A) 1.31 × 105 min 
B) 2.62 × 105 min 
C) 7.86 × 107 min 
D) 1.57 × 107 min 
E) 127 min

Question 14

The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area should be written as

Accepted Answer

A) 0.7 m2. 
B) 0.68 m2. 
C) 0.682 m2. 
D) 0.6818 m2. 
E) 0.68175 m2. 
A) 0.7 m2. 
B) 0.68 m2. 
C) 0.682 m2. 
D) 0.6818 m2. 
E) 0.68175 m2.

Question 15

When multiplying several quantities, the number of significant digits in the result must always be

Accepted Answer

A) larger than the number of significant digits in the most accurate of the quantities. 
B) equal to the number of significant digits in the most accurate of the quantities. 
C) equal to the average number of significant digits in the most and least accurate of the quantities. 
D) equal to the number of significant digits in the least accurate of the quantities. 
E) smaller than the number of significant digits in the least accurate of the quantities. 
A) larger than the number of significant digits in the most accurate of the quantities. 
B) equal to the number of significant digits in the most accurate of the quantities. 
C) equal to the average number of significant digits in the most and least accurate of the quantities. 
D) equal to the number of significant digits in the least accurate of the quantities. 
E) smaller than the number of significant digits in the least accurate of the quantities.

Question 16

0.00325 × 10-8 cm can also be expressed in mm as

Accepted Answer

A) 3.25 × 10-12 mm. 
B) 3.25 × 10-11 mm. 
C) 3.25 × 10-10 mm. 
D) 3.25 × 10-9 mm. 
E) 3.25 × 10-8 mm. 
A) 3.25 × 10-12 mm. 
B) 3.25 × 10-11 mm. 
C) 3.25 × 10-10 mm. 
D) 3.25 × 10-9 mm. 
E) 3.25 × 10-8 mm.

Question 17

Describe an order-of-magnitude estimate.

Accepted Answer

A rough estimate made by round

Question 18

All of the following are base units of the SI system except:

Accepted Answer

A) kilogram. 
B) kelvin. 
C) meter. 
D) volt. 
E) candela. 
A) kilogram. 
B) kelvin. 
C) meter. 
D) volt. 
E) candela.

Question 19

What is the conversion factor between km/ h2 and m/ s2?

Accepted Answer

A) 7.72 × 10-5 (m/ s2)/(km/ h2) 
B) 2.78 × 10-1 (m/ s2)/(km/ h2) 
C) 1.30 × 104 (m/ s2)/(km/ h2) 
D) 3.60 (m/ s2)/(km/ h2) 
E) 16.7 (m/ s2)/(km/ h2) 
A) 7.72 × 10-5 (m/ s2)/(km/ h2) 
B) 2.78 × 10-1 (m/ s2)/(km/ h2) 
C) 1.30 × 104 (m/ s2)/(km/ h2) 
D) 3.60 (m/ s2)/(km/ h2) 
E) 16.7 (m/ s2)/(km/ h2)

Question 20

Estimated uncertainty is meant to take into account precision but not accuracy.

Accepted Answer

A) True 
 B)False

Exam 1: Introduction, Measurement, Estimating

Accuracy refers to the repeatability of a measurement using a given instrument.

Select the list which contains only SI basic units.

Power is defined as the rate of work per time, power = work/time. If the dimensions of power are [ML2T-3], what are the dimensions of work?

State the general rule for significant figures when multiplying or dividing numbers.

When subtracting several quantities, the number of decimal places in the result must always be

Dimensional analysis can tell you whether an equation is physically correct.

What is 34 + ( 4) × (1.2465) written with the correct number of significant figures?

A useful method of expressing very small or very large numbers is

How many seconds in 5.24 days?

Write out the number 9.45 × 10-5 in full with a decimal point and correct number of zeros.

List the SI base units.

How many minutes is 182 days?

The length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the product as 0.68175. Rounding properly to the correct number of significant figures, the area should be written as

When multiplying several quantities, the number of significant digits in the result must always be

0.00325 × 10-8 cm can also be expressed in mm as

Describe an order-of-magnitude estimate.

All of the following are base units of the SI system except:

What is the conversion factor between km/ h2 and m/ s2?

Estimated uncertainty is meant to take into account precision but not accuracy.

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

Power is defined as the rate of work per time, power = work/time. If the dimensions of power are [ML²T^-³], what are the dimensions of work?

Write out the number 9.45 × 10^-⁵ in full with a decimal point and correct number of zeros.

0.00325 × 10^-⁸ cm can also be expressed in mm as

What is the conversion factor between km/ h² and m/ s²?