Physics 011

HW#:1

Chapter 1: Introduction

Practice Questions

 1

A kilogram is

10-3 grams.

103 grams.

106 grams.

10 grams.

 2

A centimeter is

100 meters.

10 meters.

.1 meters.

.01 meters.

 3

A megawatt is

106 watts.

103 watts.

10-3 watts.

10-6 watts.

 4

A nanosecond is

10-3 seconds.

10-6 seconds.

10-9 seconds.

10-12 seconds.

 5

A kilometer is

greater than a mile.

less than a mile.

about the size of a football field.

less than a football field.

 6

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

kilogram.

kelvin.

meter.

pound

 7

The SI prefix for 10-12 is

tera-

giga-

nano-

pico-

 8

Given (1 angstrom unit = 10-10 m) and (1 fermi = 10-15 m), what is the relationship between these units?

1 angstrom = 105 fermi

1 angstrom = 10-5 fermi

1 angstrom = 10-25 fermi

1 angstrom = 10+25 fermi

 9

Convert 0.75 kilometers to meters.

7500 m

750 m

75 m

7.5 m

 10

Convert 0.0215 m to mm.

0.215 mm

2.15 mm

21.5 mm

215 mm

 11

Add 321.475, 42.500, and 2.25, and round properly.

366

366.22

366.23

366.225

 12

Multiply 12.75 times 4.375 and round properly.

55.78125

55.78

55.8

56.0

 13

How many common house flies can fit one layer deep on a 3 inch by 5 inch card (to 1 significant figure)?

50

200

1000

5000

 14

What is the mass of a common house fly?

1 ounce

10 grams

1 gram

.01 grams

 15

What is the speed, to one significant figure, of a common house fly in ordinary flight?

1 cm/sec

10 cm/sec

100 cm/sec

100 meters/sec

 16

The number 9452 in scientific notation is

9.452x102

94.52x102

.9452x104

9.452x103

 17

The number .0000475 in scientific notation is

4.75x10-6

4.75x10-5

4.75x10-4

4.75x10-3

 18

What does 1.23 + 2.50x10-3 equal?

1.23

1.2324

1.232

1.233

 19

The volume of a sphere of radius R is

 20

The surface area of a sphere of radius R is

 21

The area of a circle of radius R is

 22

The circumference of a circle of radius R is

 23

The diagonal of a square 2.0 meters on a side is

2.0 m.

2.8 m.

2.82 m

8 m.

 24

The area of a right triangle of base, "b", and height, "h", is

b*h

b*h/2

2*b*h

sqrt(b2+h2)

 25

A 10 L container has a volume expressed in m3 of

.1 m3

.01 m3

.001 m3

.0001 m3