The piston of the car engine performed in 30 s 600 vibrations. Determine the frequency and period of its oscillations.

Data: t (duration of vibration of the engine piston) = 30 s; n (number of vibrations made by the piston) = 600 vibrations.

1) The oscillation frequency of the piston under consideration: ν = n / t = 600/30 = 20 Hz.

2) Oscillation period: T = 1 / ν = t / n = 30/600 = 0.05 s.

Answer: The frequency and period of oscillation of the engine piston under consideration are 20 Hz and 0.05 s, respectively.