Frequency, wavelength and amplitude

1

What is the name for the distance from peak to peak of a wave?

2

What is the general name for waves that require a medium to vibrate?

3

What is the unit for time period?

4

What is the time period of a 40 Hz wave?

5

What is the frequency of a wave with a time period of 0.08 s?

6

How is wave speed calculated?

7

What is the wave speed of a 1000 Hz wave with a wavelength of 0.04 m?

8

A boat at sea bobs up and down as waves pass. The vertical distance between a crest and a trough is 62 cm and 20 waves pass the boat in 30 seconds. What is the amplitude of the waves?

9

A boat at sea bobs up and down as waves pass. The vertical distance between a crest and a trough is 52 cm and 20 waves pass the boat in 10 seconds. What is the frequency of the waves?

10

What is the wavelength of a BBC Radio 1 wave that has a frequency of 99.7 MHz and speed of 300,000,000 m/s (3 x 108 m/s)?