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WorksheetsSemester 2 Physics Final
Total questions: 70
Worksheet time: 35mins
What does gravitational forces have that electrical forces do too?
infinite range
repulsive forces
attractive forces
separation distance
When blue light and red light shine on the same place on a piece of white paper, the spot appears to be
yellow
cyan
magenta
purple
If you looked at a light through the lenses from two polarizing sunglasses that were overlapped at right angles to each other,
all of the light would pass through.
little of the light would pass through.
most of the light would pass through.
none of the light would pass through.
Sound waves are
transverse, non-mechanical waves.
longitudinal, non-mechanical waves.
transverse, mechanical waves.
longitudinal, mechanical waves.
The time needed for a wave to make one complete cycle is its
period
frequency
wavelength
amplitude
The process of charging by contacting a charged object with a neutral object is called
conduction
induction
friction
radiation
Electromagnetic waves
are longitudinal
are transverse
require a medium to travel
travel very slow
Suppose the gravitational force between two spheres is 20 N. If the magnitude of each mass doubles, what is the force between the masses?
20 N
40 N
60 N
80 N
Charge is hard to be transferred in
nonconductors
semiconductors
conductors
insulators
You dip your finger repeatedly into water and make waves. If you dip your finger less frequently, the wavelength of the waves
lengthens
stays the same
shortens
What is the wavelength of microwaves of 3.0 x 10^9 Hz frequency?
0.1 m
0.05 m
0.2 m
0.06 m
In a non magnetized substance, the domains
are randomly oriented.
cancel each other.
line up mainly in one direction.
can never be reoriented.
When calculating the gravitational force between two extended bodies, you should measure the distance
from the closest points on each body.
from the most distant points on each body.
from the center of each body.
from the center of one body to the closest point on the other body.
If you comb your hair and the comb becomes positively charged, your hair becomes
uncharged
positively charged
neutrally charged
negatively charged
The ____ of light can change when light is refracted because the medium changes.
frequency
wavelength
medium
transparency
Noise-canceling earphones are an example of
constructive intereference
destructive interference
beats
resonance
Audible beats are formed by the interference of two waves
of slightly different frequencies.
of greatly different frequencies.
with equal frequencies, but traveling in opposite directions.
from the same vibrating source.
A train moves down the track away from an observer. The sound from the train, as heard by the observer, is ____ the sound heard by a passenger on the train.
the same as
a different timbre than
higher in pitch than
lower in pitch than
Why does an astronaut weigh less on the moon than on Earth?
The astronaut has less mass on the moon.
The astronaut is farther from Earth’s center when he or she is on the moon.
The gravitational field strength is less on the moon’s surface than on Earth’s surface.
The astronaut is continually in free fall because the moon orbits Earth.
Part of a pencil that is placed in a glass of water appears bent in relation to the part of the pencil that extends out of the water. What is this phenomenon called?
reflection
refraction
interference
diffraction
The compression of a longitudinal wave corresponds to which part of a transverse wave?
wavelength
amplitude
crest
trough
If the south pole of one magnet is brought near the south pole of another magnet, the poles will
attract
repel
not interact at all
repel then polarize and then attract
Pitch depends on the ____ of a sound wave.
amplitude
power
speed
frequency
A karate expert executes a swift blow and splits a cement block with her bare hand.
The forces on both the block and the expert's hand have the same magnitude.
The times of impact on both the block and the expert's hand are the same.
The impulses on both the block and the expert's hand have the same magnitude.
All of the answers.
The gravitational force between two massive spheres
is always an attraction.
depends on how massive they are.
depends inversely on the square of the distances between them.
all of the answers.
Compared to a sports car moving at 20 miles per hour, the same sports car moving at 40 miles per hour has
the same momentum
twice the momentum
three times the momentum
four times the momentum
To find a resultant wave
You use the superposition principle
You can't
You multiply them together
You subtract
Standing waves can be set up
by blowing across the top of a soda bottle.
in organ pipes
on string of musical instruments
all of the answers
Some of a wave's energy is always being dissipated as heat. In time, this will reduce the wave's
wavelength
amplitude
frequency
speed
Two skaters stand facing each other. One skater’s mass is 60 kg, and the other’s mass is 72 kg. If the skaters push away from each other without spinning,
the lighter skater has less momentum.
their total momentum doubles.
their total momentum decreases.
their momenta are equal but opposite.
The process of removing the excess charge on an object by means of the transfer of electrons between it and another object of substantial size is called
neutralization
grounding
induction
polarization
The perceived loudness of a sound is measured in
decibels
hertz
watts
hertz per square meter
A leaf on a pond oscillates up and down three complete cycles each second as a water wave passes. What is the wave's frequency?
1 Hertz
2 Hertz
3 Hertz
6 Hertz
A man who weighs 600 N at Earth's surface stands on top of a very tall ladder so he is one Earth radius above Earth's surface. How much does he weigh?
0 N
150 N
300 N
600 N
The reason padded dashboards are used in cars is that they
decrease the impulse in a collision.
increase the force of impact in a collision.
decrease the momentum of a collision.
increase the time of impact in a collision.
In which one of the following does sound travel the slowest?
water
ice
steam
sound always travels at the same speed
Ray diagrams are used to
figure out where an image will be located.
find the focal point of a lens.
figure out what kind of lens is being used.
all of the answers.
Electric current can best be induced in a wire by
stretching the wire.
moving a magnet up and down near the wire.
setting the wire near a magnet.
rotating the wire.
The part of a standing wave that appears to be standing still
node
antinode
Two balls of dough collide and stick together. Identify the type of collision.
elastic
inelastic
A freight train rolls along a track with considerable momentum. If it were to roll at the same speed but had twice as much mass, its momentum would be
zero
doubled
quadrupled
unchanged
A wave travels through a medium. As the wave passes, the particles of the medium vibrate in a direction perpendicular to the direction of the wave’s motion. The wave is
electromagnetic
longitudinal
a pulse
transverse
A roller coaster climbs up a hill at 5 m/s and then zips down the hill at 40 m/s. The momentum of the roller coaster
is greater up the hill than down the hill.
is greater down the hill than up the hill.
remains the same throughout the ride.
is zero throughout the ride.
Superman is at rest in space when he throws an asteroid that has more mass than he does. Which moves faster, Superman or the asteroid?
Superman
asteroid
neither
both have the same speed
Which of these electromagnetic waves has the longest wavelength?
Radio waves
Gamma rays
Infrared waves
Ultraviolet light
If two waves are both inverted and heading towards each other, the moment they overlap they will
total interference
constructively interfere
destructively interfere
no intereference
The process of charging a conductor by bringing it near another charged object and then grounding the conductor is called
induction
conduction
friction
polarization
Magnetic domains are
regions that may or may not be magnetized.
clusters of atoms randomly aligned.
regions of atoms magnetically aligned.
blocks of material.
When red light is compared with violet light,
both have the same frequency.
both have the same wavelength.
both travel at the same speed.
red light travels faster than violet light.
Heat lamps give off mostly
X-rays
infrared waves
ultraviolet rays
microwaves
When a glass rod is rubbed with silk and becomes positively charged,
electrons are removed from the rod.
protons are removed from the silk.
protons are added to the silk.
the silk remains neutral
Refraction is the bending of a wave disturbance as it passes at an angle from one ____ into another.
glass
area
boundary
medium
The frequency of the second hand on a clock is
1/60 Hertz
60 Hertz
1 Hertz
It doesn't have one
When two mechanical waves coincide, the amplitude of the resultant wave is always ____ the amplitudes of each wave alone.
greater than
the sum of
less than
the same as
When the frequency of a force applied to a system matches the natural frequency of vibration of the system, ____ occurs.
damped vibration
random vibration
timbre
resonance
A soccer ball collides with another soccer ball at rest. The total momentum of the balls
is zero
remains constant
increases
decreases
A ball with a momentum of 3.0 kg·m/s hits a wall and bounces straight back without losing any kinetic energy. What is the change in the ball’s momentum?
0 kg*m/s
-6.0 kg*m/s
6.0 kg*m/s
-3.0 kg*m/s
3.0 kg*m/s
When two or more waves are at the same place at the same time, the resulting effect is called
Doppler Effect
interference
standing wave
period
Electric field strength depends on
charge and distance
charge and mass
Coulomb constant and mass
charge and radius
Magnetic field strength is
weakest close to the magnet
constant everywhere
strongest far from the magnet
weakest far from the magnet
The color of an object we see is determined by the
colors of light reflected by the object.
frequencies of light absorbed by the object.
frequencies of light reflected by the object.
colors of light shining on the object.
all of the answers.
If a force is exerted on an object, which statement is true?
A large force always produces a large change in the object’s momentum.
A large force produces a large change in the object’s momentum only if the force is applied over a very short time interval.
A small force applied over a long time interval can produce a large change in the object’s momentum.
A small force always produces a large change in the object’s momentum.
In order to increase the final momentum of a golf ball, we could
increase the force acting on it.
follow through when hitting the ball.
increase the time of contact with the ball.
swing as hard as possible.
all of the answers.
Electrical forces between charges are strongest when the charges are
far apart
close together
electric force is constant everywhere
when their distance is exactly doubled
Which portion of the electromagnetic spectrum is used in a television?
X-ray
Ultraviolet
Radio
Visible Light
Two opposite charges
attract
repel
have no interaction
have to be neutrons
What is the fewest number of nodes a standing wave can have?
1
2
3
4
Sound waves cannot travel in
steel
air
water
vacuum
If you are reading a book and you move two times as far away from the light source, how does the brightness at the new distance compare with that at the old distance? It is
one-fourth as bright.
one-half as bright.
twice as bright
four times as bright
The law of conservation of momentum states that
the total initial momentum of all objects interacting with one another does not equal the total final momentum.
the total momentum of all objects interacting with one another remains constant regardless of the nature of the forces between the objects.
the total momentum of all objects interacting with one another is zero.
