# CP PHYSICS FINAL EXAM REVIEW Spring 2013

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Nov 16, 2013 (4 years and 7 months ago)

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CP PHYSICS

Name: ____
____
_______________
____
__

FINAL EXAM
REVIEW

Spring 20
1
3

__ period

1.

How are positive ions formed? How are negative ions formed?

2
.

What is the fundamental rule regarding charge interactions?

3
.

Can charges be
created or destroyed?

4.

How are conductors different from insulators?

5.

Explain how charges can be moved by:

a. conduction

b. induction

c. friction

d. grounding

6
.

What happens to the electrical force experienced by two
charged particles

separated by

some distance if:

a. one of the charges doubles?

b. both charges double?

c
. the distance is doubled?

d. the distance is tripled?

e
. one of the charges doubles and the distance is doubled?

7
.

Draw electr
ic fields for the following:

a. weak positive charge

b. strong negative charge

c
. two positive charges

d
. a negative charge and a positive charge

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page 2

8
.

Explain how each of the following
factors affects resistance through a wire:

a. conductivity

b. thickness

c. length

d. temperature

9
.

What are the
relationships

between current and voltage and current and
resistance

according
to Ohm’s Law?

10.

What relationship do current

and resistance have?

11.

If you increase the resistance, what happens to the current? If you decrease the

resistance,
what happens to the current?

1
2
.

Do you buy electrons from the power company?

1
3
.

What are two safety devices used in circuits?

How do they work?

1
4
.

What is the difference between direct current and alternating current?

1
5
.

What is a source of direct current? of alternating current?

1
6
.

How much current flows in a 175 Ω resistor when a voltage of 5.0 V is across it?

1
7
.

What is the resistance of a cold incandescent bulb filament if it draws a current of 0.43 A
when plugged into a 120 V circuit?

1
8
.

What is the resistance of an electric frying pan which draws 5.8 amps when connected to a

120 V circuit?

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
3

19
.

What is the power of the frying pan in #
18
?

20
.

What current flows through a 100.0 W light bulb connected to a 20.0 V electrical source?

21
.

An electrical appliance uses 6.0 kWh in a month. If the power company
charges

\$0.08/kWh,

what is the cost to use this electrical appliance?

2
2
.

What is a series circuit?
What is a parallel circuit?

2
3
.

If one light goes out in a series
circuit, do the remaining lights go out?

2
4
.

If one light goes out in a parallel circuit, do the remaining lights go out?

2
5
.

What happens to the equivalent (total) resistance in a series circuit when you add another
resistor to it?

What happens to th
e current?

2
6
.

What happens to the equivalent resistance in a parallel circuit when you add another resistor
to it?

What happens to the current?

27
.

What does an ammeter measure? How is it connected into a circuit?

28
.

What does a voltmeter measure?
How is it connected into a circuit?

29
.

If there are three lamps connected in series, how many paths can the

current take?

30
.

If there are three lamps connected in parallel, how many paths can the

current take?

3
1
.

Determine the equivalent resistances

for the following circuits:

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
4

3
2
.

Calculate the values represented in the missing blanks for the following

circuit diagrams.
Also, identify whether the circuit is a series or parallel

circuit.

3
3
.

How is the magnetic field oriented around a magnet?

34
.

Where is the magnetic field the strongest?

35
.

What is the smallest magnet?

36
.

What happens to the magnetic field around a current
-
carrying wire if the current through it is
reversed?

3
7
.

How does an electric motor work?

38
.

What are two ways to generate current in a wire?

39
.

How does an electric generator work?

40
.

What three factors does the strength of an electromagnet depend on?

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
5

4
1
.

What three factors does the voltage (and current) produced by a generator

depend on?

42.

Why is the kinetic molecular theory important to thermodynamics?

4
3
.

Describe the three ways that heat can be transferred:

a.
conduction

b. convection

44
.

How is temperature related to kinetic energy? What are the three temperature scales?

4
5
.

What is the difference between heat and internal energy?

46
.

What is the first law of thermodynamics?

4
7
.

What is the second law of thermodynamics?

48
.

What is a heat engine?

49
.

What is entropy?

5
0
.

Describe the three types of radioactive decay:

a. alpha

b. beta

c. gamma

5
1
.

What are isotopes? Are all isotopes radioactive

explain.

5
2
.

What is half
-
life? How is it calculated?

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
6

5
3
.

What is fission? What is fusion?

5
4
.

A sample of radon has a half
-
life of 15 hours. What fraction of the sample is left after 60
hours
have passed?

55
.

A radioactive polonium sample has a half
-
life of 103 years. How much of a 100 g sample
would remain after 412 years?

56.

Balance the following nuclear equations and state what type of decay is occurring:

a
.

209

Pb

0

e +

b
.

230

Th

4

He +

82

-
1

90

2

57.

What happens to time, space, and mass when one is traveling close to the speed of light?

58
.

What effect does a large mass’ gravitational field have on rays of light?

59
.

According to Einstein, how are mass and energy related to each other?

60
.

What does a wave do?

6
1
.

Compare and contrast mechanical and electroma
gnetic waves. Give examples of
each.

6
2
.

Describe the motion of the medium in transverse and
longitudinal waves. Give examples of
each.

6
3
.

What happens to the wavelength of a wave if the frequency increases? if it decreases?

6
4
.

What determines the wave’s speed?

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
7

6
5
.

Define the following:

a. reflection

b. refraction

c. diffraction

6
6
.

What happens during constructive interference? during destructive interference?

6
7
.

The speed of sound in air is 346 m/s. A sound wave has a frequency of 750.0 Hz. What is its
wavelength?

68
.

Waves of frequency 2.0 Hz are generated along a spring. The waves have a wavelength of
0.45 m. What is the speed of the waves along the spring?

69
.

Identify the important characteristics of sound waves.

70
.

What is Doppler shift?

71
.

W
hat happens to the frequency of a sound if the source moves toward you? away

from you?

7
2
.

What happens to the speed of sound as the temperature of the air increases?

7
3
.

What frequencies make up the ranges for:

a. infrasonic sounds

b.
audible sounds

c. ultrasonic sounds

74
.

How is pitch related to frequency?

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
8

7
5
.

A person yells across a canyon and hears his echo 4.8 seconds later. If the speed of sound is
340 m/s, how wide is
the canyon?

7
6
.

What is the wavelength of a sound wave that has a frequency of 375 Hz and a speed of 530.0
m/s?

77
.

List the seven types of electromagnetic radiation in order from the lowest energy to highest
energy. Which types has the longest wavelength? Which has the shortest frequency?

78
.

What velocity do all parts of the EM spectrum travel at?

79
.

What pr
operty of electromagnetic radiation determines its energy?

80
.

What are the primary light colors? What are the primary pigment colors?

8
1
.

List the primary light colors and their complements.

8
2
.

A white light is shown on a combination of green
and blue pigments. What color is seen?

8
3
.

A white light is shown on a combination of yellow and red pigments. What color is seen?

8
4
.

List the seven colors of light from longest wavelength to shortest wavelength. Which

color

of light has the highest frequency? lowest frequency? Which color of light has the
highest energy? lowest energy?

8
5
.

What is the difference between plane reflection and diffuse reflection?

8
6
.

Describe the images formed by the following mirrors:

a. plane

b. convex

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
9

87.

Describe the images formed by concave mirrors when the object is located:

a. outside the F point

b. at the F point

c. between F and the mirror:

8
8
.

Describe the images formed by following lenses:

a. concave

b. convex

89
.

Describe the images formed by convex lenses when the object is located:

a. outside the F point

b. at the F point

c. between F and the lens:

90
.

What is
dispersion? Identify several everyday examples of dispersion.

91
.

What is nearsightedness and how is it corrected?

92
.

What is farsightedness and how is it corrected?

93
.

What is the focal length of a mirror that has a radius of curvature of 25.0

cm?

94
.

What is the radius of curvature of a mirror that has a focal length of 25.0 cm?

95
.

A converging lens has a focal length of 15.0 cm. If an object is placed at 55.0 cm from the
lens, where will its image be located?

96
.

If the object in #
92

i
s 8.0 cm high, what is the size of its image?

CP PHYSICS, Spring
2013

FINAL EXAM REVIEW, page
10

9
7
.

What image is formed for the following mirror?

98
.

What image is formed for the following
lens
?

99.

What image is formed by the following
mirror?

100.

What image is formed by the following lens?