A wave is introduced into a thin wire held tight at each end. It has an amplitude of 3.8 cm, a frequency of 51.2 Hz and a distance from a crest to the neighbouring trough of
12.8 cm. Determine the period of such a wave.

this is in my physics I haven't touched on waves in so long. just can't figure it out could someone help me?​

Which statement correctly describes the relationship between frequency and wavelength?

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.