Question 1

What does the prefix mega- stand for?

Accepted Answer

10<sup>6</sup>

Question 2

Why so much emphasis upon units? Why are units considered to be as important as the quantity, "magnitude", of something?

Accepted Answer

Just knowing the magnitude of something is not complete information (in fact it is ambiguous) unless one also knows the units. For example, learning that you will earn 150 for a certain task might mean 150 dollars, or perhaps 150 cents, or 150 pesos. The magnitude is almost worthless without the unit in which it is expressed.

Question 3

Which of these base units is currently not defined by constants of nature?

Accepted Answer

A)  time 
B)  length 
C)  mass 
D)  current 
A)  time 
B)  length 
C)  mass 
D)  current C

Question 4

Concrete is sold by the cubic yard. What is the mass, in kilograms, of one cubic yard of concrete that is five times as dense as water? (1 m = 1.094 yd, and 1 m3 of water has a mass of 1,000 kg.)

Accepted Answer

A)  764 kg 
B)  3819 kg 
C)  8733 kg 
D)  6546 kg 
E)  2420 kg 
A)  764 kg 
B)  3819 kg 
C)  8733 kg 
D)  6546 kg 
E)  2420 kg

Question 5

10. mL is equal to

Accepted Answer

A)  0.01 L 
B)  0.001 ML 
C)  10-6 L 
D)  1.0 kL 
E)  0.10 L 
A)  0.01 L 
B)  0.001 ML 
C)  10-6 L 
D)  1.0 kL 
E)  0.10 L

Question 6

Which one of the following volumes is largest?

Accepted Answer

A)  quart 
B)  cubic inch 
C)  liter 
D)  500. cm3  
E)  cc 
A)  quart 
B)  cubic inch 
C)  liter 
D)  500. cm3  
E)  cc

Question 7

What is the result of adding 23.4 to 91.237 and then subtracting 23.4?

Accepted Answer

A)  91.2 
B)  91.237 
C)  91. 
D)  91.0 
E)  91.3 
A)  91.2 
B)  91.237 
C)  91. 
D)  91.0 
E)  91.3

Question 8

Zeros at the beginning of a number are significant.

Accepted Answer

A) True 
 B)False

Question 9

Zeros at the end of a number after the decimal point are not significant.

Accepted Answer

A) True 
 B)False

Question 10

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)  the precision of all scales were equal 
A)  A 
B)  B 
C)  C 
D)  D 
E)  the precision of all scales were equal

Question 11

The Earth is divided into 24 time zones, in each of which local time differs by 1 hour. At 45° N latitude, what is the width of a time zone? (The Earth's radius is 6370 km. 45° N latitude is about as far North as Portland, Oregon, and is halfway between the equator and the North pole.)

Accepted Answer

The answer of The Earth is divided into 24 time...

Question 12

The SI unit of length, the meter, is currently defined

Accepted Answer

A)  as the length of the path traveled by light in a vacuum during 1/299792485 s. 
B)  as the distance between two marks on a metal bar make of a platinum-iridium alloy kept at the National Bureau of Standards. 
C)  by the President's foot. 
D)  as 10-7 of the distance from the North Pole to the equator along a meridian running through Paris. 
E)  1,553,164.1 wavelengths of red cadmium light in dry air at 25°C. 
A)  as the length of the path traveled by light in a vacuum during 1/299792485 s. 
B)  as the distance between two marks on a metal bar make of a platinum-iridium alloy kept at the National Bureau of Standards. 
C)  by the President's foot. 
D)  as 10-7 of the distance from the North Pole to the equator along a meridian running through Paris. 
E)  1,553,164.1 wavelengths of red cadmium light in dry air at 25°C.

Question 13

State the six general problem-solving steps given in the text.

Accepted Answer

1. Read the problem carefully, and analy

Question 14

If kerosene costs 130. Passi per liter, and one dollar buys 227. Passi; what is its cost in DOLLARS per GALLON? [1.00 gallon = 3.79 liters]

Accepted Answer

The answer of If kerosene costs 130. Passi per liter,...

Question 15

List the seven base units in the SI system.

Accepted Answer

meter, kilogram, sec

Question 16

Substitute the correct prefix to the fun-word "10-cards".

Accepted Answer

A)  pico 
B)  milli 
C)  deka 
D)  giga 
E)  tera 
A)  pico 
B)  milli 
C)  deka 
D)  giga 
E)  tera

Question 17

Which of the following is a kilometer?

Accepted Answer

A)  106 m 
B)  10-9 m 
C)  109 m 
D)  10-6 m 
E)  1000 m 
A)  106 m 
B)  10-9 m 
C)  109 m 
D)  10-6 m 
E)  1000 m

Question 18

Substitute the correct prefix to the fun-word "103-mockingbird".

Accepted Answer

A)  pico 
B)  peta 
C)  tera 
D)  deci 
E)  kilo 
A)  pico 
B)  peta 
C)  tera 
D)  deci 
E)  kilo

Question 19

A football field is 120 yd long and 50 yd wide. What is the area of the football field, in m2?

Accepted Answer

A)  4206 m2  
B)  2400 m2  
C)  6000 m2  
D)  5019 m2  
E)  3688 m2  
A)  4206 m2  
B)  2400 m2  
C)  6000 m2  
D)  5019 m2  
E)  3688 m2

Question 20

Express 0.23 × 102 meters to three significant figures.

Accepted Answer

Exam 1: Measurement and Problem Solving

What does the prefix mega- stand for?

Why so much emphasis upon units? Why are units considered to be as important as the quantity, "magnitude", of something?

Which of these base units is currently not defined by constants of nature?

Concrete is sold by the cubic yard. What is the mass, in kilograms, of one cubic yard of concrete that is five times as dense as water? (1 m = 1.094 yd, and 1 m3 of water has a mass of 1,000 kg.)

10. mL is equal to

Which one of the following volumes is largest?

What is the result of adding 23.4 to 91.237 and then subtracting 23.4?

Zeros at the beginning of a number are significant.

Zeros at the end of a number after the decimal point are not significant.

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?

The Earth is divided into 24 time zones, in each of which local time differs by 1 hour. At 45° N latitude, what is the width of a time zone? (The Earth's radius is 6370 km. 45° N latitude is about as far North as Portland, Oregon, and is halfway between the equator and the North pole.)

The SI unit of length, the meter, is currently defined

State the six general problem-solving steps given in the text.

If kerosene costs 130. Passi per liter, and one dollar buys 227. Passi; what is its cost in DOLLARS per GALLON? [1.00 gallon = 3.79 liters]

List the seven base units in the SI system.

Substitute the correct prefix to the fun-word "10-cards".

Which of the following is a kilometer?

Substitute the correct prefix to the fun-word "103-mockingbird".

A football field is 120 yd long and 50 yd wide. What is the area of the football field, in m2?

Express 0.23 × 102 meters to three significant figures.

Kinematics: Description of Motion

Motion in Two Dimensions

Force and Motion

Work and Energy

Linear Momentum and Collisions

Circular Motion and Gravitation

Rotational Motion and Equilibrium

Solids and Fluids

Temperature and Kinetic Theory

Heat

Thermodynamics

Vibrations and Waves

Sound

Electric Charge, Forces, and Fields

Electric Potential, Energy, and Capacitance

Electric Current and Resistance

Basic Electric Circuits

Magnetism

Electromagnetic Induction and Waves

AC Circuits

Reflection and Refraction of Light

Mirrors and Lenses

Physical Optics: The Wave Nature of Light

Vision and Optical Instruments

Relativity

Quantum Physics

Quantum Mechanics and Atomic Physics

The Nucleus

Nuclear Reactions and Elementary Particles

Filters

Concrete is sold by the cubic yard. What is the mass, in kilograms, of one cubic yard of concrete that is five times as dense as water? (1 m = 1.094 yd, and 1 m³ of water has a mass of 1,000 kg.)

Substitute the correct prefix to the fun-word "10³-mockingbird".

A football field is 120 yd long and 50 yd wide. What is the area of the football field, in m²?

Express 0.23 × 10² meters to three significant figures.