Who wanna be meh best friend

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

What are similarities and differences of reflection, refraction, diffraction and absorption?

Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.