Question 1

Express the sum 1.00 kg + 1531 g + 2.54 × 104 mg in kilograms with the correct number of significant figures.

Accepted Answer

A) 2.56 kg 
B) 27.9 kg 
C) 2.53 kg 
D) 2.79 kg 
A) 2.56 kg 
B) 27.9 kg 
C) 2.53 kg 
D) 2.79 kg

Question 2

A large school district has 300 school buses. If each school bus is used 3.0 hours each day, the average speed of the school buses is 15 mi/h, and the fuel economy of the buses is 10 mi/gal. How much does it cost to run these buses for 22 school days if gasoline costs $4.10 a gallon?

Accepted Answer

A) $60,000 
B) $120,000 
C) $180,000 
D) $240,000 
A) $60,000 
B) $120,000 
C) $180,000 
D) $240,000

Question 3

What is the difference between 103.5 and 102.24 expressed to the correct number of significant figures?

Accepted Answer

A) 1.3 
B) 1.26 
C) 1.260 
D) 1.2600 
A) 1.3 
B) 1.26 
C) 1.260 
D) 1.2600

Question 4

What is the result of the calculation (0.410 + 0.021)× (2.20 × 103)?

Accepted Answer

A) 880 
B) 946 
C) 948 
D) 950 
A) 880 
B) 946 
C) 948 
D) 950

Question 5

The following conversion equivalents are given: 1.0 m = 100 cm 1.0 in = 2.54 cm 1.0 ft = 12 in
If a bin has a volume of 1.5 m3, the volume of the bin, in ft3, is closest to

Accepted Answer

A) 35 ft3 
B) 41 ft3 
C) 47 ft3 
D) 53 ft3 
E) 59 ft3 
A) 35 ft3 
B) 41 ft3 
C) 47 ft3 
D) 53 ft3 
E) 59 ft3

Question 6

Estimate how many pennies would you have to stack to reach from the floor to an average 8-ft ceiling.

Accepted Answer

A) 2 × 103 
B) 2 × 102 
C) 2 × 104 
D) 2 × 105 
E) 2 x 106 
A) 2 × 103 
B) 2 × 102 
C) 2 × 104 
D) 2 × 105 
E) 2 x 106

Question 7

The number of significant figures in 0.040 is

Accepted Answer

A) one. 
B) two. 
C) three. 
D) four. 
A) one. 
B) two. 
C) three. 
D) four.

Question 8

At a certain time, the average size of a transistor in a microprocessor was 250 nanometers. A human hair has a diameter of 70 microns (micrometers). How many transistors fit across a human hair?

Accepted Answer

A) 280 
B) 28 
C) 2800 
D) 2.8 
E) 0.28 
A) 280 
B) 28 
C) 2800 
D) 2.8 
E) 0.28

Question 9

Which of the following speeds is greatest? (2.54 cm = 1.00 in.)

Accepted Answer

A) 10 km/h 
B) 10 m/s 
C) 10 ft/s 
D) 10 mi/h 
E) 10 yd/s 
A) 10 km/h 
B) 10 m/s 
C) 10 ft/s 
D) 10 mi/h 
E) 10 yd/s

Question 10

What is 56 + $\frac { 32.00 } { 1.2465 + 3.45 }$ written with the correct number of significant figures?

Accepted Answer

A) 62.8 
B) 62.812 
C) 62.81 
D) 63 
E) 62.8123846 
A) 62.8 
B) 62.812 
C) 62.81 
D) 63 
E) 62.8123846

Question 11

The number 0.00325 × 10-8 cm can be expressed in millimeters 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. 
A) 3.25 × 10-12 mm. 
B) 3.25 × 10-11 mm. 
C) 3.25 × 10-10 mm. 
D) 3.25 × 10-9 mm.

Question 12

The metric system is preferred over the British system in science for the following main reason.

Accepted Answer

A) The metric system is more precise than the British system. 
B) Metric quantities can be defined more accurately than the quantities in the British system. 
C) Metric quantities are natural whereas British quantities are invented. 
D) Conversions between metric quantities are especially easy because they are all related by factors of ten. 
A) The metric system is more precise than the British system. 
B) Metric quantities can be defined more accurately than the quantities in the British system. 
C) Metric quantities are natural whereas British quantities are invented. 
D) Conversions between metric quantities are especially easy because they are all related by factors of ten.

Question 13

A typical ruby-throated hummingbird is 8 cm long. Express its length in millimeters and micrometers (µm).

Accepted Answer

A) 80 mm; 800 µm 
B) 80 mm; 80,000 µm 
C) 800 mm; 0.008 µm 
D) 800 mm; 0.8 µm 
E) 0.8 mm; 8000 µm 
A) 80 mm; 800 µm 
B) 80 mm; 80,000 µm 
C) 800 mm; 0.008 µm 
D) 800 mm; 0.8 µm 
E) 0.8 mm; 8000 µm

Question 14

What is 0.2052/3, to the correct number of significant figures?

Accepted Answer

A) 0.348 
B) 0.35 
C) 0.3 
D) 0.3477 
A) 0.348 
B) 0.35 
C) 0.3 
D) 0.3477

Question 15

There are 2.00 dry pints to 1.00 dry quart, 8.00 dry quarts to 1.00 peck, 4.00 pecks to 1.00 bushel. An organic farmer wants to pick enough berries to fill 40,000 pint containers. How many bushels of berries does the farmer need?

Accepted Answer

The answer of There are 2.00 dry pints to 1.00...

Question 16

A speed of 60 mi/h is closest to which of the following? (2.54 cm = 1.00 in.)

Accepted Answer

A) 60 m/s 
B) 20 m/s 
C) 30 km/h 
D) 120 m/s 
E) 30 m/s 
A) 60 m/s 
B) 20 m/s 
C) 30 km/h 
D) 120 m/s 
E) 30 m/s

Question 17

A marathon race is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride.

Accepted Answer

A) 4.5 × 104 strides 
B) 4.5 × 103 strides 
C) 4.5 × 105 strides 
D) 4.5 × 106 strides 
A) 4.5 × 104 strides 
B) 4.5 × 103 strides 
C) 4.5 × 105 strides 
D) 4.5 × 106 strides

Question 18

A reasonable estimate for the duration of a typical physics lecture is

Accepted Answer

A) 600 s. 
B) 1000 s. 
C) 3500 s. 
D) 10,000 s. 
A) 600 s. 
B) 1000 s. 
C) 3500 s. 
D) 10,000 s.

Question 19

A plot of land contains $5.8 \text { acres. }$ How many square meters does it contain? (1.0 acre = 43,560 ft2 and 2.54 cm = 1.00 in.)

Accepted Answer

A) 2.3 × 104 m2 
B) 7.1 × 103 m2 
C) 7.0 × 104 m2 
D) 5.0 × 104 m2 
A) 2.3 × 104 m2 
B) 7.1 × 103 m2 
C) 7.0 × 104 m2 
D) 5.0 × 104 m2

Question 20

What is the sum of 2.67 + 1.976 + 2.1 expressed to the correct number of significant figures?

Accepted Answer

A) 6.7 
B) 6.75 
C) 6.746 
D) 6.7460 
A) 6.7 
B) 6.75 
C) 6.746 
D) 6.7460

Exam 1: Representing Motion

Express the sum 1.00 kg + 1531 g + 2.54 × 104 mg in kilograms with the correct number of significant figures.

A large school district has 300 school buses. If each school bus is used 3.0 hours each day, the average speed of the school buses is 15 mi/h, and the fuel economy of the buses is 10 mi/gal. How much does it cost to run these buses for 22 school days if gasoline costs $4.10 a gallon?

What is the difference between 103.5 and 102.24 expressed to the correct number of significant figures?

What is the result of the calculation (0.410 + 0.021)× (2.20 × 103)?

The following conversion equivalents are given: 1.0 m = 100 cm 1.0 in = 2.54 cm 1.0 ft = 12 in If a bin has a volume of 1.5 m3, the volume of the bin, in ft3, is closest to

Estimate how many pennies would you have to stack to reach from the floor to an average 8-ft ceiling.

The number of significant figures in 0.040 is

At a certain time, the average size of a transistor in a microprocessor was 250 nanometers. A human hair has a diameter of 70 microns (micrometers). How many transistors fit across a human hair?

Which of the following speeds is greatest? (2.54 cm = 1.00 in.)

What is 56 + 32.001.2465+3.45\frac { 32.00 } { 1.2465 + 3.45 }1.2465+3.4532.00​ written with the correct number of significant figures?

The number 0.00325 × 10-8 cm can be expressed in millimeters as

The metric system is preferred over the British system in science for the following main reason.

A typical ruby-throated hummingbird is 8 cm long. Express its length in millimeters and micrometers (µm).

What is 0.2052/3, to the correct number of significant figures?

There are 2.00 dry pints to 1.00 dry quart, 8.00 dry quarts to 1.00 peck, 4.00 pecks to 1.00 bushel. An organic farmer wants to pick enough berries to fill 40,000 pint containers. How many bushels of berries does the farmer need?

A speed of 60 mi/h is closest to which of the following? (2.54 cm = 1.00 in.)

A marathon race is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride.

A reasonable estimate for the duration of a typical physics lecture is

A plot of land contains 5.8 acres. 5.8 \text { acres. }5.8 acres. How many square meters does it contain? (1.0 acre = 43,560 ft2 and 2.54 cm = 1.00 in.)

What is the sum of 2.67 + 1.976 + 2.1 expressed to the correct number of significant figures?

Motion in One Dimension

Vectors and Motion in Two Dimensions

Forces and Newtons Laws of Motion

Applying Newtons Laws

Gravity

Rotational Motion

Equilibrium Ad Elasticity

Momentum

Energy and Work

Using Energy

Thermal Properties of Matter

Fluids

Oscillations

Traveling Waves and Sound

Superposition and Standing Waves

Wave Optics

Ray Optics

Optical Instruments

Electric Fields and Forces

Electric Potential

Current and Resistance

Circuits

Magnetic Fields and Forces

Em Induction and Em Waves

Ac Electricity

Relativity

Quantum Physics

Atoms and Molecules

Nuclear Physics

Filters

Express the sum 1.00 kg + 1531 g + 2.54 × 10⁴ mg in kilograms with the correct number of significant figures.

What is the result of the calculation (0.410 + 0.021)× (2.20 × 10³)?

The following conversion equivalents are given: 1.0 m = 100 cm 1.0 in = 2.54 cm 1.0 ft = 12 in If a bin has a volume of 1.5 m³, the volume of the bin, in ft³, is closest to

What is 56 + $\frac { 32.00 } { 1.2465 + 3.45 }$ written with the correct number of significant figures?

The number 0.00325 × 10^-8 cm can be expressed in millimeters as

What is 0.205^2/3, to the correct number of significant figures?

A plot of land contains $5.8 \text { acres. }$ How many square meters does it contain? (1.0 acre = 43,560 ft² and 2.54 cm = 1.00 in.)