The subject's feet are flat on the floor and close together; arms are at his sides with facing forward.

Can anybody me with this? ? (picture included.)

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm