PHYSICS
FINAL REVIEW Borrowed from
Spring 2012, Mrs. Ward
Due on day of final. Please complete problems on a separate sheet of paper.
DO NOT ATTACH THIS PAPER TO YOUR COMPLETED WORK.
Chapter 10, Energy, Work and Simple
Machines
1.
work done by forces along the direction of motion, opposite to the direction of
motion, and at an angle to the direction of motion
2.
Relationship between work and energy
3.
Work-Kinetic Energy Theorem
-
what does it say?
-
must know NET work and CHANGE in kinetic energy to use this
4.
Power and energy transfer
Chapter 11, Energy and Its Conservation
1.
Forms of mechanical energy (kinetic, types of potential, etc.)
2.
Conservation of mechanical energy and problems
-When
does this apply?
Chapter 9, Momentum and Its Conservation
1. Impulse-momentum theorem
-
what is impulse?
-
what is momentum?
-
applications and problems
2.
Conservation of Momentum
-
for closed, isolated systems
-
problems in one dimension
Chapters
20 and 21, Electrostatics
1. Methods of electrically charging objects
- Contact, Induction, polarization
-
What kind of charge do you get?
2. Electric insulators and conductors
3. Coulomb’s Law
4. Electric fields
- what they are
- how to calculate them (both equations
and when to use them)
- drawing field lines
5. Characteristics of a conductor in
electrostatic equilibrium
6. Electric Potential and Potential difference
-
what does it do?
Chapters
22 and 23, Circuits
1. Current
2. Resistance and Ohm’s Law
3. Electric Power (all 3 equations and when to use them)
4. Series Circuits (all properties)
5.
Parallel Circuits (all properties)
Chapters 24 and 25, Magnetism
1.
Source of magnetism
2.
Magnetic fields
- what they are and what affects their strength
- what they look like around bar magnets and
wires
- right-hand rule for direction around wires
3.
Magnetic forces
- what affects their strength on charged particles
and current carrying wires
- right-hand rule for direction on charged
particles and current carrying wires
Simple Harmonic Motion (Sec 14.1)
1.
Characteristics of this motion:
velocity, acceleration, forces, period
- The Pendulum, Mass on a Spring
-
What affects the period for each one
Chapter 14, Vibrations and Waves
1.
Types of waves
2.
Measures of a wave - frequency, wavelength, velocity
-
what determines the velocity of a wave?
3.
What happens at the boundaries between media?
4.
The principle of superposition and interference
5.
Doppler Effect
Chapters 16 and 17, Light and Reflection
1.
What type of wave is light?
2. Wavelengths for visible light - what is red
and what is violet?
3.
The speed of light in a vacuum
4.
Reflection
-
diffuse vs. specular reflection
5.
Flat, convex, and concave mirrors and the images they form
6.
Real vs. virtual images
7.
The mirror equation and magnification (don't forget the sign rules!)
Chapter 18, Refraction
1.
Refraction
-
the index of refraction
-
Snell's Law
-
Total internal reflection and the critical angle
2.
Convex and concave lenses and the images they form
3. The lens equation and magnification (don't
forget the sign rules!)
Final
Review Problems
1. A child on a sled starts from rest at the
top of one hill, coasts down the hill, and then up a second hill. If the mass of the child and the sled is 65
kg, the height of the first hill is 15 m and the height of the second hill is
4.0 m, what is the velocity of the child and the sled at the top of the second
hill? Assume there is no friction, and
use conservation of mechanical energy.
2. A 12.0 kg shopping cart is pushed from
rest by a 280.0 N force. A 75.0 N
friction force opposes the motion. After the cart has traveled 11.5 m, what is
the cart's final speed? Use the Work-Kinetic Energy Theorem.
3.
A 0.20 kg baseball is pitched with a
velocity of 42 m/s and is then batted to
the pitcher with a velocity of 63 m/s.
If the ball was in contact
with the bat for 0.15 s, what force did the bat exert on the ball?
4. A snowball with a mass of 85 g hits a
snowman's top hat and sticks to it. The
hat and snowball, with combined mass of 220 g, fly off together at 8.0
m/s. How fast was the snowball moving at
the moment of impact?
5. Consider a thundercloud that has an electric
charge of 40.0 C near the top of the cloud and -40.0 C near the bottom of the
cloud. These charges are separated by
2.0 km. What is the electric force
between these two sets of charges?
6. An electric field of 3.2x104 N/C is directed along the positive x-axis.
What is the electric force on an electron in this field? (include both size and direction.)
7. A
point charge has a charge of +2.0 µC.
What is the electric field 10.0 cm away from the charge? (include both size and direction)
8. Two resistors of 4.0 Ω and 12 Ω are
connected in series across a 9.0 V battery.
a)
What is the equivalent resistance of the circuit?
b)
What is the current through each resistor?
c)
What is the voltage drop across each resistor?
9. Two resistors of 15.0 Ω and 35.0 Ω are connected
in parallel across a 45.0 V voltage source.
a)
What is the equivalent resistance of the circuit?
b)
What is the total current in the circuit?
c)
What is the current through each resistor?
10. A mass on a spring vibrates in simple
harmonic motion. If the period of the
vibrations is 0.75s and the spring constant is 130 N/m, what is the mass of the
object?
11. What is the period of a pendulum that is 45
cm long if the pendulum is on Earth (g = 9.80 m/s2)?
12. A tuning fork produces a sound with a
frequency of 256 Hz and a wavelength in air of 1.35 m.
a) What value does this give for the speed
of sound in air?
b) What would be the wavelength of the wave
produced by this tuning fork in water in which the sound travels at 1500 m/s?
13. A thimble 2.1 cm high is placed in front of
a concave mirror. A real image of the
thimble is formed 17.0 cm in front of the mirror. The radius of curvature of the mirror is 20.0
cm.
a)
How far is the object from the mirror?
b) What is the magnification of the
mirror?
14. A
candle that is 10.0 cm high is placed 30.0 cm in front of a diverging
lens. The lens has a 20.0 cm focal
length.
a) Where does the image appear to be
located?
b) What is the magnification of the image?
15. Diamond has an index of refraction of
2.419. If it is immersed in water, which
has an index of refraction of 1.333, and light rays in the water shine on the
diamond at an angle of incidence of 22.0°, what is the angle of refraction
inside the diamond?
ANSWERS:
1. vf = 15 m/s
2. vf = 19.8 m/s
3. F
= -1.4x102 N
4. v1i = 21 m/s
5. 3.6x106
N, attractive
6. 5.1x10-15 N, along the negative
x-axis
7. 1.8x106 N/C, away from the
charge
8. a)
16 W
b)
0.56 A
c)
2.2 V, 6.7 V
9. a)
10.5 W
b)
4.3 A
c)
3.0 A, 1.3 A
10. 1.9
kg
11. 1.3
s
12. a) 346 m/s
b)
5.86 m
13. a)
24.3 cm
b) –0.700
14. a)
-12.0 cm
b)
0.400
15. 11.9°
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