Sound Test - 32...

The piston in a petrol engine goes up and down $$3000$$ times per minute. For this engine, calculate the period of the piston.

The time period of a sound wave from a piano is $$1.18\times10^{-3} s$$. Find its frequency.

A tuning fork's tongs vibrate 250 times in 2.0s. Find the frequency of vibration

Which of the following pictures correctly show the way sound vibrations travel?

Take a metallic tumbler and a tablespoon. Strike the tablespoon gently at the brim of the tumbler (as shown in the figure above). Now suspend a small thermocole ball touching the rim of the tumbler and touch it to the vibrating tumbler. See how far the ball is displaced. Now, again strike the tablespoon at the brim of the tumbler but strike it hard this time. Again touch the thermocole to the vibrating tumbler and see how far the ball is displaced. Choose the correct option. 

Calculate the period of a strobe light flashing $$25$$ times in $$5.0\ s$$.

Calculate the frequency, in hertz, for 120 Oscillations in 2.0 s

Calculate the frequency for ten swings of a pendulum in $$6.7\ s$$.

A scientist performed an experiment as shown in the picture above. What happened as air was pumped out of the jar and he rang the bell?

Each of the four bowls below is filled with water up to different levels. When struck with a wooden rod, which bowl will produce sound of the lowest pitch?