MCAS Physics Practice #3

Which of the following wave characteristics is the same for any electromagnetic wave traveling through empty space?

• Frequency

• Period

• Wavelength

• Speed

Tags

NGSS.HS-PS4-1

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

  
  

Tags

NGSS.MS-PS3-4

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.

  
  

Tags

NGSS.HS-PS2-4

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

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NGSS.HS-PS4-1

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

Tags

NGSS.HS-PS2-1

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

Tags

NGSS.MS-PS3-1

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

Tags

NGSS.MS-PS3-3

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

  
  

Tags

NGSS.HS-PS3-4

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.

  
  

Tags

NGSS.HS-PS4-1