McFizics Oscillations & Waves Review

If we double the frequency of a system undergoing simple harmonic motion, which of the following statements about that system are true? (There could be more than one correct choice.)

• The period is doubled.

• The angular frequency is doubled.

• The amplitude is doubled.

• The period is reduced to one-half of what it was.

• The angular frequency is reduced to one-half of what it was.

Tags

NGSS.HS-PS4-1

Two simple pendulums, A and B, are each 3.0 m long, and the period of pendulum A is T. Pendulum A is twice as heavy as pendulum B. What is the period of pendulum B?

• T/√2

• T

• T√2

• 2T

• T/2

Identical balls oscillate with the same period T on Earth. Ball A is attached to an ideal spring and ball B swings back and forth to form a simple pendulum. These systems are now taken to the Moon, where g = 1.6 m/s², and set into oscillation. Which of the following statements about these systems are true? (There could be more than one correct choice.)

• Both systems will have the same period on the Moon as on Earth.

• On the Moon, ball A will take longer to complete one cycle than ball B.

• On the Moon, ball B will take longer to complete one cycle than ball A.

• On the Moon, ball A will execute more vibrations each minute than ball B.

• On the Moon, ball B will execute more vibrations each minute than ball A.

Grandfather clocks are designed so they can be adjusted by moving the weight at the bottom of the pendulum up or down. Suppose you have a grandfather clock at home that runs slow. Which of the following adjustments of the weight would make it more accurate?

• Raise the weight.

• Lower the weight.

• Add more mass to the weight.

• Remove some mass from the weight.

• Increase the amplitude of swing by a small amount.

Tags

NGSS.MS-PS2-2

Grandfather clocks are designed so they can be adjusted by moving the weight at the bottom of the pendulum up or down. Suppose you have a grandfather clock at home that runs fast. Which of the following adjustments of the weight would make it more accurate?

• Raise the weight.

• Lower the weight.

• Add more mass to the weight.

• Remove some mass from the weight.

What is the wavelength of the wave shown in the figure?

• 8 m.

• 4 m.

• 2 m.

• 1 m.

• It cannot be determined from the given information.

Tags

NGSS.HS-PS4-1

What is the frequency of the wave shown in the figure?

• 0.5 Hz.

• 1 Hz.

• 2 Hz.

• 4 Hz.

• It cannot be determined from the given information.

Tags

NGSS.HS-PS4-1

If a guitar string has a fundamental frequency of 500 Hz, which one of the following frequencies can set the string into resonant vibration?

• 250 Hz

• 750 Hz

• 1500 Hz

• 1750 Hz

Tags

NGSS.HS-PS4-1

A leaky faucet drips 40 times in 300 s. What is the frequency of the dripping?

• 1.3 Hz

• 0.75 Hz

• 1.6 Hz

• 0.63 Hz

Tags

NGSS.HS-PS4-1

If a floating log is seen to bob up and down 15 times in 1.0 min as waves pass by you, what are the frequency and period of the wave?

• Frequency = 0.25 Hz, Period = 4.0 s

• Frequency = 0.50 Hz, Period = 2.0 s

• Frequency = 0.10 Hz, Period = 10.0 s

• Frequency = 0.30 Hz, Period = 3.3 s

Tags

NGSS.HS-PS4-1