Question 1

If v and t represent velocity and time,respectively,C1 in v = C1e-C2t must

Accepted Answer

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

Question 2

You are traveling at a speed of 80 km/hr.Your speed in mph is approximately

Accepted Answer

A) 30  
B) 40  
C) 50  
D) 60 
E) 70 
A) 30  
B) 40  
C) 50  
D) 60 
E) 70

Question 3

Evaluate:

Accepted Answer

A) 1.1 $\times$ 105  
B) 1.7 $\times$ 10-4  
C) 3.6 $\times$ 10-8  
D) 4.5 $\times$ 105  
E) 1.1 
A) 1.1 $\times$ 105  
B) 1.7 $\times$ 10-4  
C) 3.6 $\times$ 10-8  
D) 4.5 $\times$ 105  
E) 1.1

Question 4

Light travels at 3 $\times$ 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 5

The prefix "centi" means

Accepted Answer

A) 10-12  
B) 10-6  
C) 10-3  
D) 10-2  
E) 10-1  
A) 10-12  
B) 10-6  
C) 10-3  
D) 10-2  
E) 10-1

Question 6

Vectors   and   have the following components:   The magnitude of the vector   -   is

Accepted Answer

A) 6.3 units 
B) 10.0 units 
C) 2.8 units 
D) 8.2 units 
E) 16 units 
A) 6.3 units 
B) 10.0 units 
C) 2.8 units 
D) 8.2 units 
E) 16 units

Question 7

If K has dimensions ML2/T 2,the k in K = kmv 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 8

The prefix "micro" means

Accepted Answer

A) 10-12  
B) 10-6  
C) 10-3  
D) 10-2  
E) 10-1  
A) 10-12  
B) 10-6  
C) 10-3  
D) 10-2  
E) 10-1

Question 9

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 $\times$ 102 g · cm/s 
D) 6.98 $\times$ 102 g · cm/s 
E) 6.975 $\times$ 102 g · cm/s 
A) 697.5 g · cm/s 
B) 698 g · cm/s 
C) 7.0 $\times$ 102 g · cm/s 
D) 6.98 $\times$ 102 g · cm/s 
E) 6.975 $\times$ 102 g · cm/s

Question 10

The chemical agent dioxin can be toxic or hazardous to humans in concentrations as small as one part per billion.If I am testing a soil sample that has a mass of 1.0 kg,how much dioxin would have to be present for me to label it toxic or hazardous?

Accepted Answer

A) a picogram 
B) a kilogram 
C) a microgram 
D) a milligram 
E) a nanogram 
A) a picogram 
B) a kilogram 
C) a microgram 
D) a milligram 
E) a nanogram

Question 11

The prefix "kilo" means

Accepted Answer

A) 1012  
B) 108  
C) 106  
D) 103  
E) 101  
A) 1012  
B) 108  
C) 106  
D) 103  
E) 101

Question 12

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 13

The size of a proton is of the order of 10-15 m and the size of the visible universe is of the order of 1026 m.From this information you can conclude that

Accepted Answer

A) the size of the universe is 26 orders of magnitude greater than that of the proton. 
B) the size of the universe is 41 orders of magnitude greater than that of the proton. 
C) the size of the proton is 11 orders of magnitude greater than that of the universe. 
D) the size of the universe is 15 orders of magnitude greater than that of the proton. 
E) the size of the proton is 15 orders of magnitude greater than that of the universe. 
A) the size of the universe is 26 orders of magnitude greater than that of the proton. 
B) the size of the universe is 41 orders of magnitude greater than that of the proton. 
C) the size of the proton is 11 orders of magnitude greater than that of the universe. 
D) the size of the universe is 15 orders of magnitude greater than that of the proton. 
E) the size of the proton is 15 orders of magnitude greater than that of the universe.

Question 14

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

Question 15

Which of the following represents a value of current measured to at least five significant figures?

Accepted Answer

A) 2.375 $\times$ 104 A 
B) 0.00347 A 
C) 3.0 $\times$ 105 A 
D) 23.75 $\times$ 101 A 
E) 50.300 A 
A) 2.375 $\times$ 104 A 
B) 0.00347 A 
C) 3.0 $\times$ 105 A 
D) 23.75 $\times$ 101 A 
E) 50.300 A

Question 16

Earth's population,expressed as an order of magnitude,is closest to

Accepted Answer

A) 106  
B) 1010  
C) 105  
D) 108  
E) 107  
A) 106  
B) 1010  
C) 105  
D) 108  
E) 107

Question 17

What angle does the vector   = 5   - 12   make with the positive x axis?

Accepted Answer

A) 67.4º 
B) 22.6º 
C) 36.9º 
D) 53.1º 
E) 24.6º 
A) 67.4º 
B) 22.6º 
C) 36.9º 
D) 53.1º 
E) 24.6º

Question 18

Light travels at 3 $\times$ 108 m/s,and the size of a proton is about 1 fm.Calculate the order of magnitude for the time taken for light to pass across a proton.

Accepted Answer

A) 10-7 s 
B) 10-8 s 
C) 10-22 s 
D) 10-23 s 
E) 1023 s 
A) 10-7 s 
B) 10-8 s 
C) 10-22 s 
D) 10-23 s 
E) 1023 s

Question 19

Vector   has components Ax = +4.0 units and Ay = +3.2 units,whereas vector   has components Bx = +2.5 units and By = +5.5 units.The angle between the two vectors is

Accepted Answer

A) 24º 
B) 65º 
C) 27º 
D) 39º 
E) 14º 
A) 24º 
B) 65º 
C) 27º 
D) 39º 
E) 14º

Question 20

A vector of magnitude 5 points in the +y direction.Another vector of magnitude 4 is subtracted from the first vector.The smallest possible magnitude of the sum is

Accepted Answer

A) 1  
B) 4 
C) 5 
D) 9 
E) 10  
A) 1  
B) 4 
C) 5 
D) 9 
E) 10

Exam 1: Systems of Measurement

If v and t represent velocity and time,respectively,C1 in v = C1e-C2t must

You are traveling at a speed of 80 km/hr.Your speed in mph is approximately

Evaluate:

Light travels at 3 ×\times× 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

The prefix "centi" means

Vectors and have the following components: The magnitude of the vector - is

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

The prefix "micro" means

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

The chemical agent dioxin can be toxic or hazardous to humans in concentrations as small as one part per billion.If I am testing a soil sample that has a mass of 1.0 kg,how much dioxin would have to be present for me to label it toxic or hazardous?

The prefix "kilo" means

The prefix "mega" means

The size of a proton is of the order of 10-15 m and the size of the visible universe is of the order of 1026 m.From this information you can conclude that

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.)

Which of the following represents a value of current measured to at least five significant figures?

Earth's population,expressed as an order of magnitude,is closest to

What angle does the vector = 5 - 12 make with the positive x axis?

Light travels at 3 ×\times× 108 m/s,and the size of a proton is about 1 fm.Calculate the order of magnitude for the time taken for light to pass across a proton.

Vector has components Ax = +4.0 units and Ay = +3.2 units,whereas vector has components Bx = +2.5 units and By = +5.5 units.The angle between the two vectors is

A vector of magnitude 5 points in the +y direction.Another vector of magnitude 4 is subtracted from the first vector.The smallest possible magnitude of the sum is

Motion in One Dimension

Motion in Two and Three Dimensions

Newtons Laws

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

The Electric Field I: Discrete Charge Distributions

The Electric Field Ii: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

Filters

If v and t represent velocity and time,respectively,C₁ in v = C₁e^-C2^t must

Light travels at 3 $\times$ 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

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

The size of a proton is of the order of 10^-15 m and the size of the visible universe is of the order of 10²⁶ m.From this information you can conclude that

Light travels at 3 $\times$ 10⁸ m/s,and the size of a proton is about 1 fm.Calculate the order of magnitude for the time taken for light to pass across a proton.

Vector has components A_x = +4.0 units and A_y = +3.2 units,whereas vector has components B_x = +2.5 units and B_y = +5.5 units.The angle between the two vectors is