What is the amplitude and wavelengths of the wave shown below?

a. amplitude: 30cm; wavelength: 60cm

b. amplitude: 30cm; wavelength: 110cm

c. amplitude: 60cm; wavelength: 60cm

d. amplitude: 60cm; wavelength: 110cm

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane

Which statement correctly describes the interaction between magnetic poles? north and south poles attract each other. north and south poles repel each other. two north poles will attract each other. two south poles will attract each other.