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WorksheetsPhysics Final Review
Total questions: 45
Worksheet time: 31mins
According to Newton’s Universal Law of Gravitation, ________.
A. The greater the masses, the greater the gravitational force between them.
B. The greater the distance between the masses, the greater the gravitational force between them.
C. The greater the masses, the weaker the gravitational force between them.
. D. The force of gravity is the strongest of the four presently known fundamental forces.
If a wave has a wavelength of 2 m and a frequency of 20 Hz, what is the speed of the wave?
20 m/s
40 m/s
30 m/s
10 m/s
The vibration of an object about an equilibrium point is referred to as simple harmonic motion when the restoring force is proportional to which of the following?
Time
Spring Constant
Dusplacement
Mass
Look at the image below.
As depicted in the image, a person mowing a lawn exerts a force of 120 N at an angle of 30.0° above the horizontal. How much work does the person do when he or she moves 20.0 meters, at a constant velocity?
1500 joules
2080 Joules
1220 Joules
2040 Joules
A 20.0 newton force is used to push a 2.00 kilogram cart a distance of 5.00 meters. How much work is done on the cart? is
(a)
While the ball is in the air after it leaves the table, what happens to the relationship between its kinetic and potential energies?
(a)
Use the diagram below to answer any questions that follow. In the diagram, a ball of mass 0.200 kg rolls off of a tabletop at a speed of 2.00 m/s. The table is 1.25 m high. (Assume that the potential energy at the floor is zero. Disregard rotational kinetic energy.)
2.45 J
0.00 J
2.85 J
0.85 J
Momentum is considered a vector quantity because it has
(a)
When can total internal reflection occur?
when the angle of incidence is equal to the critical angle
when the angle of incidence is less than the critical angle
from a material with a higher index of refraction to one with a lower index of refraction
from a material with a lower index of refraction to one with a higher index of refraction
What is the position and type of image produced by the lens shown above?
between F and 2F; virtual
to the right of 2F; virtual
between F and 2F; real
to the right of 2F; real
What is the momentum of a 30-kilogram cart moving with a speed of 10 meters per second?
(a)
The equation E = mc2 relates to which of the following principles?
Mass always travels at the speed of light in a vacuum.
Energy is emitted or absorbed in discrete packets called photons.
The fundamental source of all energy is the conversion of mass into energy.
The energy of a photon is proportional to its frequency.
When a 10-kilogram mass is raised vertically 2 meters from the ground, what is its gain in potential energy?
100 J
200 J
250 J
150 J
When the speed of an object is halved, what happens to its kinetic energy?
Doubled
Half
Quadrapled
Says the same
Which of the following correctly lists three vector quantities?
acceleration, force, mass
speed, velocity, volume
mass, speed, volume
acceleration, force, velocity
What is the current through resistor R2, in amps to the nearest hundredth? where each restance is 4 ohms
0.33 A
0.54 A
0.25 A
3 A
What is the centripetal acceleration of a ball traveling at 6.0 meters per second in a circle of radius 9.0 meters?
(a)
An object weighing 10 newtons is lifted from the ground to a height of 0.22 meter. What is the increase in the object's gravitational potential energy?
3.3 J
3.14 J
2.2 J
10 J
The diagram below shows a 4.0-kilogram cart moving to the right and a 6.0-kilogram cart moving to the left on a horizontal, frictionless surface.
When the two carts collide they lock together. What is the magnitude of the total momentum of the two-cart system after the collision?
10 N-s
15 N-s
6.0 N-s
8 N-s
Which of the following characteristics best describe the image formed when an object is placed two focal lengths from a convex lens?
real, inverted, and larger than the object
virtual, erect, and the same size as the object
virtual, erect, and smaller than the objectreal, inverted, and larger than the object
real, inverted, and the same size as the object
If the object's distance from the lens were increased, the image would become
larger and virtual.
smaller and virtual.
larger, only.
smaller, only.
In any chemical or physical process, energy is neither created nor destroyed.This is a statement of which law?
the law of momentum
the law of conservation of mass
the law of conservation of energy
Law of Matter
A weightlifter presses a 200 N weight 0.5 m over his head in 2 s. What is the power of the weightlifter?
200 N
50 W
25 W
50 N
When can total internal reflection occur?
when the angle of incidence is less than the critical angle
when the angle of incidence is equal to the critical angle
from a material with a lower index of refraction to one with a higher index of refraction
from a material with a higher index of refraction to one with a lower index of refraction
What is the wavelength of microwaves of 2.0 x 109 Hz frequency? (c= 3.0 x 108 m/s)
1.0 x 10-1 m
3.3 x 10-1 m
1.5 x 10-1 m
15x 10-2 m
A person weighing 6.0 × 102 newtons rides an elevator upward at an average speed of 3.0 meters per second for 5.0 seconds. How much does the person's gravitational potential energy increase as a result of this ride?
3.6 × 10^{2} J
5.0 ×10^{3} J
1.8 × 10^{2} J
9.0 × 10^{3} J
If net force is zero the motion of the object will NOT change
True
False
Both
None the above
The object shown in the diagram must be at rest since there is no net force acting on it.
(a)
You are a passenger in a car and not wearing your seat belt.
Without increasing or decreasing its speed, the car makes a sharp left turn, and you find yourself colliding with the right-hand door.
Which is the correct analysis of the situation? .
Before and after the collision, there is a rightward force pushing you into the door
Starting at the time of collision, the door exerts a leftward force on you.
both of the above
None of the above
The ambulance is moving towards the woman standing
on the sidewalk.
As the ambulance approaches the woman, how will
she perceive the pitch of the siren and why?
She will perceive a higher pitch because the
frequency of the sound waves is higher.
The pitch she will perceive will be the same, only the
volume of the sound is louder
She will perceive a higher pitch because the
speed of the sound waves is faster.
The pitch she will perceive will be the same, only
the intensity of the sound is greater.
A wave with a speed of 25 m/s has a frequency
of 400 Hz. What is the wavelength of the wave?
A. 16 m
B. 375 m
C. 0.0625 m
D. 400 m
A wave has a frequency of 450 Hz and a
wavelength of 4 meters. At what velocity will this
wave travel?
A.112.5 m/s
B. 1800 m/s
C. 454 m/s
D. 0.008 m/s
What is the frequency of a wave with a period of
2 seconds?
2 Hz
B. 1 Hz
C. 0.5 Hz
D. 3 Hz
The bouncing back of waves from a surface they cannot pass through is called (a) .
_________________ occurs when the light changes direction as it passes to a new medium and
changes speed.
Reflection
Diffraction
Interference
Refraction
both mechanical and electromagnetic waves
need a medium to travel through?
True
False
Both
None
What is the SI unit for electric current?
Volts
Ohms
Amperes
Joules
The spreading out of waves as they travel around obstacles or through openings in obstacles is called
Diffraction
Reflection
Refraction
Ohm's Law
The bending of waves as they enter a new medium is called ___________________
Interference
Reflection
Diffraction
Refraction
Defined as: an object at rest will remain at rest unless acted upon by a force.
Newton's 1St law
Newton's 2nd law
Newton's 3rd law
None
Gamma rays are emanations that have
Mass
Energy
both
neither mass nor Energy
Which particle is emitted from a hydrogen-3 nucleus when it undergoes radioactive decay?
γ
β+
β-
α
Which of these types of nuclear radiation has the least penetrating power ?
Alpha
Beta
Gamma
Neutron
The equation below represents a nuclear reaction. When the equation is balanced correctly, what is the particle represented by X?
n01
H11
H12
e−1 0
What is the speed of a plane that travels 9000 meters in 12.12 seconds ?
927,37 m/s
787.07 m/s
742.57 m.s
577.85 m/s
