Normally what is the hearing range of a young person in Hertz?

When a drawn bow of potential energy 40 J is fired, the arrow will ideally have a kinetic energy

The work you do when pushing a shopping cart twice as far while applying the same force is

In the Doppler effect it is important to distinguish between

The distance traveled by a wave during a single period is

A water wave passes by a floating leaf that is made to oscillate up and down two complete cycles each second, which means that the wave’s frequency is

What is the period, in seconds, that corresponds to a frequency of 10 Hz?

What is the frequency in Hertz that corresponds to a period of 5 seconds?

Calculate the kinetic energy in Joules of an 84 kg scooter moving at 10 m/s.

Which requires more work:  lifting a 50 kg sack a vertical distance of 2 m or lifting a 25 kg sack a vertical distance of 4m?