I'm confused! Please help me if you can!

What is the relationship between the wavelength of a wave and it's energy?

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

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