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WorksheetsMcas Physics
Total questions: 22
Worksheet time: 44mins
Which of the following wave characteristics is the same for any electromagnetic wave traveling through empty space?
Frequency
Period
Wavelength
Speed
Two U.S. quarters, initially at the same temperature, are heated with a flame. One of the quarters was made before 1965 and is composed of silver. The other quarter was made after 1965 and is composed mostly of copper. What information is needed to determine which quarter will heat up faster?
the specific heats of the metals and
the mass of each coin
the initial temperature of the coins
and the mass of each coin
the temperature of the flame and the
specific heats of the metals
the initial temperature of the coins
and the temperature of the flame
Two particles with the same positive charge are 100 cm apart. What happens to the electric force between the two particles when the charge on each particle doubles?
The electric force becomes
attractive.
The magnitude of the electric force
decreases.
The attractive electric force becomes
two times as strong.
The repulsive electric force becomes
four times as strong.
The diagram above represents a wave pattern made by an object moving in water, as seen from above the surface of the water.
Based on the wave pattern shown, in which direction is the object moving?
North
East
South
West
The free-body force diagram represents four forces acting on an object. What is the net force on the object?
0 N
2 N to the right
6 N along the vertical axis
18 N in all directions
The circuit shown below has a variable resistor connected to a 6.0 V battery.
The value of the current at several settings of the variable resistor is recorded in the table above. What amount of current flows through the battery when the variable resistor is set for 4 ohms?
1.5 A
1.0 A
0.75 A
0.50 A
The graph represents an
object’s motion over four time intervals: W, X, Y, and Z.
During which time interval does the object move with constant, positive velocity?
interval W
interval X
interval Y
interval Z
A fan enables a computer’s processor to run for long periods of time without overheating. Which of the following forms of heat energy transfer does this example best represent?
condensation
evaporation
convection
radiation
A small steel rod is placed in 5 L
of water. The initial temperature of the steel rod is 120°C, and the initial temperature of the water is 10°C.
When does heat stop flowing between the steel rod and the water?
when the steel rod reaches 65°C
when the water reaches its boiling point
when the steel rod reaches 10°C and
the water reaches 120°C
when the steel rod and the water
reach the same temperature
Which of the following describes properties that distinguish red light from violet light?
Red light has a longer wavelength
and a lower frequency.
Red light has a longer wavelength
and a higher frequency.
Red light has a shorter wavelength
and a lower frequency.
Red light has a shorter wavelength
and a higher frequency.
Four charged objects, labeled W, X, Y, and Z, are arranged in a straight line, as shown above.
Identify the two objects that have the greatest magnitude of electric force between them.
W and X
W and Y
X and Y
Y and Z
Four charged objects, labeled W, X, Y, and Z, are arranged in a straight line, as shown above.
Identify the two objects that have the smallest magnitude of electric force between them.
Explain your answer.
W and X
X and Y
W and Z
X and Z
What is the primary difference between insulators and conductors?
Electrons are present in insulators
but not in conductors.
Electrons are present in conductors
but not in insulators.
Electrons are free to move in
insulators but not in conductors.
Electrons are free to move in
conductors but not in insulators.
The diagram below shows a pool with a length of 50 m. A person swims three lengths of the pool: from point X to point Y, from point Y to point X, and then from point X to point Y again.
Which table shows the magnitudes of the distance the person traveled and the person’s final displacement?
Two identical objects, one hot and one cold, are placed near each other in a closed system. Which of the following graphs shows what happens to the temperatures of the objects over time?
Which of the following statements describes what happens when a sound wave moves from air into water?
The speed of the sound wave
increases.
The speed of the sound wave
decreases.
The frequency of the sound wave
increases.
The wavelength of the sound wave
decreases.
A book is dropped and falls to the floor. Which of the following describes the forces between the book and the floor when the book hits the floor?
The book exerts a force on the floor,
but the floor does not exert a force
on the book.
The book does not exert a force on
the floor, but the floor exerts a force
on the book.
The force exerted by the book on the
floor is greater in magnitude than
the force exerted by the floor on the
book.
The force exerted by the book on
the floor is equal in magnitude to
the force exerted by the floor on the
book.
Electromagnetic radiation is used
in many forms of communication. Electromagnetic waves with relatively long wavelengths are often used to transmit signals because these waves travel easily around objects.
Which type of electromagnetic radiation is best for transmitting signals around objects?
gamma rays
radio waves
ultraviolet rays
x-rays
The diagram shows a top view
of a glass aquarium filled with water. A laser pointer is aimed at the front of the aquarium at an angle. When the light from the laser initially hits the front of the aquarium, what is the most likely result?
All the light is absorbed by the
glass.
All the light passes through the
glass.
Some light reflects off the glass at
an angle equal to the incident angle,
and some light refracts into the
water.
Some light reflects off the glass at
an angle greater than the incident
angle, and some light refracts into
the water.
A student builds a simple circuit and places a magnet under one of the circuit’s wires. When the switch is closed, charges flow in the circuit and the wire moves, as shown in the diagram below. Which question is the student most likely trying to answer?
Does a positive charge build up in
the wire?
Does a negative charge build up in
the wire?
Does the current in the wire create
a magnetic field?
Does the current in the wire cause
the wire to heat up?
Which of the following diagrams represents the motion of particles in a transverse wave?
The graph represents an object’s velocity over four time intervals: W, X, Y, and Z. During which time interval does the object have a positive acceleration?
interval W
interval X
interval Y
interval Z
