Question 1

Determine the scalar product of   = 6.0   + 4.0   - 2.0   and   = 5.0   - 6.0   - 3.0   .

Accepted Answer

A)  30   + 24   + 6   
B)  30   - 24   + 6   
C)  12 
D)  60 
E)  undefined 
A)  30   + 24   + 6   
B)  30   - 24   + 6   
C)  12 
D)  60 
E)  undefined

Question 2

Convert a speed of 4.50 km/h to units of ft/min.(1.00 m = 3.28 ft)

Accepted Answer

A)  0.246 ft/min 
B)  82.3 ft/min 
C)  165 ft/min 
D)  246 ft/min 
E)  886 ft/min 
A)  0.246 ft/min 
B)  82.3 ft/min 
C)  165 ft/min 
D)  246 ft/min 
E)  886 ft/min

Question 3

The components of vector   are   = +2.2 and   = -6.9,and the components of vector   are given are   = -6.1 and   = -2.2.What is the magnitude of the vector   -   ?

Accepted Answer

A)  9.5 
B)  6.1 
C)  9.9 
D)  91 
E)  0.76 
A)  9.5 
B)  6.1 
C)  9.9 
D)  91 
E)  0.76

Question 4

Vectors   and   are shown in the figure.What is   ?

Accepted Answer

A)  31.8 
B)  -32.0   - 2.00   
C)  1028 
D)  34.0 
E)  -2.00   - 32.0   
A)  31.8 
B)  -32.0   - 2.00   
C)  1028 
D)  34.0 
E)  -2.00   - 32.0

Question 5

The current definition of the standard meter of length is based on

Accepted Answer

A)  the distance between the earth's equator and north pole. 
B)  the distance between the earth and the sun. 
C)  the distance traveled by light in a vacuum. 
D)  the length of a particular object kept in France. 
A)  the distance between the earth's equator and north pole. 
B)  the distance between the earth and the sun. 
C)  the distance traveled by light in a vacuum. 
D)  the length of a particular object kept in France.

Question 6

Convert 1.2 × 10-3 to decimal notation.

Accepted Answer

A)  1.200 
B)  0.1200 
C)  0.0120 
D)  0.0012 
E)  0.00012 
A)  1.200 
B)  0.1200 
C)  0.0120 
D)  0.0012 
E)  0.00012

Question 7

What is the magnitude of the cross product of a vector of magnitude 2.00 m pointing east and a vector of magnitude 4.00 m pointing 30.0° west of north?

Accepted Answer

A)  6.93 
B)  -6.93 
C)  4.00 
D)  -4.00 
E)  8.00 
A)  6.93 
B)  -6.93 
C)  4.00 
D)  -4.00 
E)  8.00

Question 8

What is the result of 1.58 ÷ 3.793 written with the correct number of significant figures?

Accepted Answer

A)  4.1656 ×   
B)  4.166 ×   
C)  4.17 ×   
D)  4.2 ×   
E)  4 ×   
A)  4.1656 ×   
B)  4.166 ×   
C)  4.17 ×   
D)  4.2 ×   
E)  4 ×

Question 9

What is the magnitude of   +   +   ,where   = 1.00   + 4.00   - 1.00   ,   and   = -1.00   + 1.00   ?

Accepted Answer

A)  7.07 
B)  2.00 
C)  10.76 
D)  6.78 
E)  8.12 
A)  7.07 
B)  2.00 
C)  10.76 
D)  6.78 
E)  8.12

Question 10

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 SI units of m • s-2.)

Accepted Answer

A)  g/ℓ 
B)  gℓ2 
C)  gℓ 
D)    
E)    
A)  g/ℓ 
B)  gℓ2 
C)  gℓ 
D)    
E)

Question 11

If two nonzero vectors point in the same direction,their dot product must be zero.

Accepted Answer

A) True 
 B)False

Question 12

Estimate the number of pennies that would fit in a box one foot long by one foot wide by one foot tall.

Accepted Answer

A)  5 ×   
B)  5 ×   
C)  5 ×   
D)  5 ×   
E)  5 ×   
A)  5 ×   
B)  5 ×   
C)  5 ×   
D)  5 ×   
E)  5 ×

Question 13

Two boys searching for buried treasure are standing underneath the same tree.One boy walks   east and then   north.The other boy walks   west and then   north.Find the scalar product of their net displacements from the tree.

Accepted Answer

The answer of Two boys searching for buried treasure are...

Question 14

Approximately how many pennies would you have to stack to reach an average 8-foot ceiling?

Accepted Answer

A)  2 ×   
B)  2 ×   
C)  2 ×   
D)  2 ×   
E)  2 ×   
A)  2 ×   
B)  2 ×   
C)  2 ×   
D)  2 ×   
E)  2 ×

Question 15

What is the vector product of   = 2.00   + 3.00   + 1.00   and   = 1.00   - 3.00   - 2.00   ?

Accepted Answer

A)  -3.00   + 5.00   - 9.00   
B)  -5.00   + 2.00   - 6.00   
C)  -9.00   - 3.00   - 3.00   
D)  -4.00   + 3.00   - 1.00   
E)  2.00   -9.00   - 2.00   
A)  -3.00   + 5.00   - 9.00   
B)  -5.00   + 2.00   - 6.00   
C)  -9.00   - 3.00   - 3.00   
D)  -4.00   + 3.00   - 1.00   
E)  2.00   -9.00   - 2.00

Question 16

What is 34 + (3)× (1.2465)written with the correct number of significant figures?

Accepted Answer

A)  37.7 
B)  37.74 
C)  4 × 101 
D)  38 
E)  37.7395 
A)  37.7 
B)  37.74 
C)  4 × 101 
D)  38 
E)  37.7395

Question 17

If a woman weighs 125 lb,her mass expressed in kilograms is x kg,where x is

Accepted Answer

A)  less than 125. 
B)  greater than 125. 
A)  less than 125. 
B)  greater than 125.

Question 18

What is the value of π(8.104)2,written with the correct number of significant figures?

Accepted Answer

A)  206.324 
B)  206.323 
C)  206.3 
D)  206 
E)  200 
A)  206.324 
B)  206.323 
C)  206.3 
D)  206 
E)  200

Question 19

Vector   = -3.00   + 3.00   and vector   = 3.00   + 4.00   .What is vector   =   +   ?

Accepted Answer

A)  0.00   + 3.00   
B)  7.00   + 7.00   
C)  -3.00   + 7.00   
D)  0.00   + 7.00   
E)  -3.00   - 3.00   
A)  0.00   + 3.00   
B)  7.00   + 7.00   
C)  -3.00   + 7.00   
D)  0.00   + 7.00   
E)  -3.00   - 3.00

Question 20

A teacher sends her students on a treasure hunt.She gives the following instructions: 1.Walk 300 m north.
2)Walk 400 m northwest.
3)Walk 700 m east-southeast and the treasure is buried there.
As all the other students walk off following the instructions,Jane physics student quickly adds the displacements and walks in a straight line to find the treasure.How far and in what direction does Jane need to walk?

Accepted Answer

A)  187 m in a direction 67.3° north of east 
B)  481 m in a direction 40.9° north of east 
C)  399 m in a direction 52.5° north of east 
D)  284 m in a direction 28.2° west of north 
E)  The treasure position cannot be reached in one straight walk. 
A)  187 m in a direction 67.3° north of east 
B)  481 m in a direction 40.9° north of east 
C)  399 m in a direction 52.5° north of east 
D)  284 m in a direction 28.2° west of north 
E)  The treasure position cannot be reached in one straight walk.

Exam 1: Units,physical Quantities,and Vectors

Determine the scalar product of = 6.0 + 4.0 - 2.0 and = 5.0 - 6.0 - 3.0 .

Convert a speed of 4.50 km/h to units of ft/min.(1.00 m = 3.28 ft)

The components of vector are = +2.2 and = -6.9,and the components of vector are given are = -6.1 and = -2.2.What is the magnitude of the vector - ?

Vectors and are shown in the figure.What is ?

The current definition of the standard meter of length is based on

Convert 1.2 × 10-3 to decimal notation.

What is the magnitude of the cross product of a vector of magnitude 2.00 m pointing east and a vector of magnitude 4.00 m pointing 30.0° west of north?

What is the result of 1.58 ÷ 3.793 written with the correct number of significant figures?

What is the magnitude of + + ,where = 1.00 + 4.00 - 1.00 , and = -1.00 + 1.00 ?

If two nonzero vectors point in the same direction,their dot product must be zero.

Estimate the number of pennies that would fit in a box one foot long by one foot wide by one foot tall.

Two boys searching for buried treasure are standing underneath the same tree.One boy walks east and then north.The other boy walks west and then north.Find the scalar product of their net displacements from the tree.

Approximately how many pennies would you have to stack to reach an average 8-foot ceiling?

What is the vector product of = 2.00 + 3.00 + 1.00 and = 1.00 - 3.00 - 2.00 ?

What is 34 + (3)× (1.2465)written with the correct number of significant figures?

If a woman weighs 125 lb,her mass expressed in kilograms is x kg,where x is

What is the value of π(8.104)2,written with the correct number of significant figures?

Vector = -3.00 + 3.00 and vector = 3.00 + 4.00 .What is vector = + ?

Motion Along a Straight Line

Motion in Two or Three Dimensions

Newtons Laws of Motion

Applying Newtons Laws

Work and Kinetic Energy

Potential Energy and Energy Conservation

Momentum,impulse,and Collisions

Rotation of Rigid Bodies

Dynamics of Rotational Motion

Equilibrium and Elasticity

Fluid Mechanics

Gravitation

Periodic Motion

Mechanical Waves

Sound and Hearing

Temperature and Heat

Thermal Properties of Matter

The First Law of Thermodynamics

The Second Law of Thermodynamics

Electric Charge and Electric Field

Gausss Law

Electric Potential

Capacitance and Dielectrics

Current,resistance,and Electromotive Force

Direct-Current Circuits

Magnetic Field and Magnetic Forces

Sources of Magnetic Field

Electromagnetic Induction

Inductance

Alternating Current

Electromagnetic Waves

The Nature and Propagation of Light

Geometric Optics

Interference

Diffraction

Relativity

Photons: Light Waves Behaving As Particles

Particles Behaving As Waves

Quantum Mechanics

Atomic Structure

Molecules and Condensed Matter

Nuclear Physics

Particle Physics and Cosmology

Filters

Convert 1.2 × 10^-3 to decimal notation.

What is the value of π(8.104)²,written with the correct number of significant figures?