NEW
Font size
Worksheetsphysics review
Total questions: 40
Worksheet time: 20mins
Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as heat by each. Their final temperatures may be different because the samples have different:
Thermal conductivity
coefficients of expansion
volume
specific heat capacity
dragon glass
If the only force acting on an object is friction during a given physical process, which of the following assumptions must be made in regard to the object's kinetic energy?
Kinetic energy increases
Kinetic energy decreases
Kinetic energy remains the constant
Kinetic energy increases then decreases
Winter is coming
IF an object is lowered into a deep hole in the ground, which of the following assumptions must be made in regard to the object's potential energy?
Potential energy increases
Potential energy decreases
Potential energy remains constant
Potential energy increases then decreases
A Lannister always pays his debts
Which of the following equations represents the relationship between displacement and time shown in Table 3?
d = 102
d = 4.9t2
d = 4.9t
d = 10t-1
The flight of a raven
Which curve best describes the relationship between time and displacement of d = 4.9t2?
A
B
C
D
The dead can never die
Kinetic energy is KE = ½mv2. If kinetic energy is increased by a factor of 2 speed is
Increased by a factor of 2
Increased by a factor of 3
Increased by a factor of 4
Increased by a factor of 1.4
A mass, m(kg) is hanging from an ordinary spring as shown below causing it to stretch a distance x, (meters) from its original length before reaching the equilibrium. Another identical mass, m (kg) is added to the first mass, how much would the spring stretch from its original length? Assume that the masses are not so large to permanently distort the spring.
X
1.5X
2X
Not enough info
Brandon designs an experiment to investigate how the period of a pendulum is affected by its length. (Period is the time for one oscillation.) Which of the following is best considered as the dependent variable?
Period of the pendulum
Mass of the pendulum
Length of the pendulum
None of the above
Standing waves are produced by periodic waves of ...
Any amplitude and wavelength traveling in the same direction
The same amplitude and wavelength traveling in the same direction
Any amplitude and wavelength traveling in opposite direction
The same frequency, amplitude, and wavelength traveling in opposite directions
Kameron walks 8m Eastward, turns North, walks 6m, then stops, What is Kameron's displacement?
14 m
7 m
10 m
None of the above
According to the displacement time graph, during which time interval does the object have a constant positive acceleration?
A-B and B-C
A-B, B-C, and C-D
A-B
None of the above
Ben is 90 kg and runs 15 m of stairs.. How long will it take him to generate 415 Watts of power? P = mgh/t t=mgh/P
32 s
12 s
3.2 s
30 s
Markeria,who has a mass of 50kg, is running around a circular track, radius of 12 m, with a constant speed of 8.0 m/s. What is the total amount of work done on the runner?
200 J
zero J
1600 J
30,600 J
Shanice tosses a ball into the air. Assume there is friction due to air resistance. How does the kinetic energy (K) at the moment the ball is going up (max velocity, min height) compare the the potential energy (U) of the ball at the top of the trajectory (min velocity, max height)?
K is greater than U
K is equal to U
K is less than U
It is impossible to tell
Valyrian steel
A book of 2.0 kg is sliding across a table as shown below. What forces are exerted on the book?
gravity, inertia, normal force
gravity, inertia, tension
gravity, normal force, friction
gravity, tension, friction
A projectile is fired with initial velocity Vo at angle ϴ above the horizontal and follows the trajectory as shown. Which of the following pairs of graphs best represents the vertical components of the vertical velocity (Vy) and vertical acceleration (Ay) of the projectile as a function of time, t?
A 1.0kg ball and a 5.0 kg ball are dropped at the same time at the same height (above the ground). As resistance is insignificant, compare the time in the air of the balls from the time they are dropped until the time they reach the ground.
It takes the 5.0 kg ball a shorter time to strike the ground because it has the greater mass.
It takes the 1.0 kg ball a shorter time to strike the ground because it has a smaller mass.
Both balls strike the ground at the same time because their masses do not affect their times in the air.
None of the above.
Gravity from the Earth exerts an 800-N force on a student. At the same time, the student exerts on the Earth a force of ___________. (Assume the Earth-Student system is an isolated and controlled system).
800 N
Less than 800 N
More than 800 N
Not enough information
An electric current produces ______________
gravitation field
electrical field
magnetic field
electromagnetic field
A physics book has a mass, M, placed on an inclined plane at 30 degrees above the horizontal as shown in the figure. What is the magnitude of the normal force on the book in the term of its mass and acceleration due to gravity (g)?
2mg
0.86mg
0.5mg
mg
Which of the following is an accurate statement?
If a non-zero net external force acts on an object, its momentum will not remain constant.
The momentum of a projectile is always constant.
The momentum of a moving object is constant.
If the kinetic energy of an object is doubled, its momentum will also double.
Surya Bonaly is ice skating and starts spinning on the frictionless ice with his arms extended. When she pulls in arms in ...
Her angular acceleration increases
Her rotational inertia increases
Her rotational kinetic energy decreases
Her angular momentum remains the same
A small car meshes with a truck in a head-on collision. The vehicles have equal speeds. Which of the following statements concerning the velocity of the vehicle after the collision is correct?
The car and truck move with the initial velocity of the truck.
The car and truck move with half of the initial velocity.
The car and truck move with a diminished velocity in the direction of the truck.
Not enough information
A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the MAGNITUDE of the average collision force is correct?
The truck experience the greater average force
The small car experience the greater average force
The small car and the truck experience the same average force
It is impossible to tell since the masses and velocities are not given
A ball of 5.0 kg is dropped from a height of 10 m above the ground. What is the total energy of the ball at the 5-m position, half way? (Use g = 10m/s2) No air resistance.
100 J
500 J
Zero J
Need more information
A ball of 5.0 kg is dropped from a height of 10m above the ground. What is the magnitude of the net force on the ball at 5.0 m, half way? (Use g = 10m/s2) No air resistance.
5 N
10 N
Zero N
None of the above
A uniform plank is placed with a pivot at its center. A block is placed on the plank to the left of the pivot as shown. A student is asked to place a second block of greater mass on the plank so it will balance when horizontal. Which of the following quantities are needed to determine where the second block should be placed?
The masses of the plank and of each block
Only the mass of each block
The length of the plank and the distance from the pivot to the left block
The mass of each block and the distance from the pivot to the left block.
How much force is required to stop a 1200 kg car moving at 10.0 m/s in 20.0 s?
600 N
1200 N
2400 N
None of the above
Which two points on the wave are in phase?
A and C
A and E
B and D
B and F
Consider a standing wave on a guitar string and the sound wave generated by the guitar as a result of this vibration. What do these two waves have in common?
They have the same wavelength
They have the same velocity
They have the same frequency
None of the above
The Night King
An electroscope is given a positive charge, causing its foil leaves to separate. When an object is brought near the top plate of the electroscope, the foils separate even further. We could conclude
The object is positively charge
The object is electrically neutral
The object is negatively charged
Only the object is charged
What is the total resistance of the circuit segment shown in the diagram?
0.88 ohms
1 ohm
1.2 ohms
12 ohms
Which phenomenon of light is represented in the diagram?
Dispersion
Diffraction
Internal reflection
polarization
Light refracted as it enters the surface of water undergoes a change in ...
Frequency
Velocity
Color
All of the above
In a vacuum, electromagnetic radiation of short wavelengths ...
Travels as fast as radiation of long wavelengths
Travels slower than radiation of long wavelengths
Travels faster than radiation of long wavelengths
Can travel both faster and slower than radiation of long wavelengths
In the circuit shown, a constant current device is connected to some identical light bulbs. First, the switch S in the current is open. As the switch S is closed, which statement is correct about the change in brightness of the light bulbs?
Only bulb B brighter
Only bulb A becomes dimmer
All three bulbs become equally brighter
Bulb A does not change the brightness, bulb B becomes dimmer, and bulb C becomes brighter
The resistance of a wire does not depend upon which of a following?
length
material out of which it is made
cross sectional area
insulation
Which of the following is referred to as the total amount of charge that passes through a wire's full cross section at any point per unit?
electrical potential difference
electrical energy
wattage
current
A student combs his hair with a plastic comb, and the hair becomes positively charged. What is the net charge of the comb and the hair?
. Zero because protons move from the comb to the hair
Zero because electrons move from the hair to the comb
Positive because protons move from the comb to the hair
Negative because electrons move from the comb to the hair
Two different samples have the same mass and temperature. Equal quantities of energy are absorbed as heat by each. Their final temperatures may be different because the samples have different:
thermal conductivity
coefficients of expansion
volume
specific heat capacity
