Period and Frequency Practice

How long does it take the Earth to make one REVOLUTION around the Sun?

• 12 hours
• 24 hours
• 365 days
• 29.5 days

A 0.30 m vinyl record revolves on a turntable that "turns" a record around and around at 33 RPM (revolutions per minute). What is the period of the record player?

• 0.55 s

• 1.8 s

• 110 s

• .009 s

A tennis ball is being swung on the end of a 1.5 m (r) string and takes 1.25 seconds (T) for a complete revolution. What is the period (T) of the tennis ball?

• 1.25 s

• 0.833 s

• 1.2 s

• 0.021 s

A merry-go-round has a diameter of 10 m and can make 30 complete rotations in 5 minutes. Calculate the period of the merry-go-round.

• 6 s

• 4 s

• 10 s

• 0.167 s

A car travels in a circular path of radius 30 m, and takes 60 s to make a complete circle. What is the period of the car?

• 60 s

• 2 s

• 0.0167 s

• 0.5 s

After closing a deal with a client, Kent leans back in his swivel chair and spins around with a frequency of 0.5 Hz. What is Kent’s period of spin?

• 120 s

• 0.0083 s

• 0.5 s

• 2 s

Curtis’ favorite disco record has a scratch 12 cm from the center that makes the record skip 45 times each minute. What is the period of the scratch as it turns?

• 0.75 s

• 3.75 s

• 1.3 s

• 0.267 s

Missy’s favorite ride at the Topsfield Fair is the Rotor, which has a radius of 4.0 m. The ride takes 2.0 s to make one full revolution. Calculate the period of the Rotor.

• 0.5 s

• 2.0 s

• 0.033 s

• 30 s

Marianne puts her favorite Backstreet Boys disc in her CD player. If it spins with a frequency of 1800 revolutions per minute, what is the period of spin of the compact disc?

• 30 s

• 1800 s

• 400 s

• 0.033 s

Tags

NGSS.HS-PS4-1

What is the period of an automobile tire that turns with a frequency of 11 Hz and has a linear speed of 20.0 m/s?

• 0.091 s

• 11 s

• 1.82 s

• 0.18 s