To store stacks of clean plates, a cafeteria uses a closed cart with a spring-loaded shelf inside. Customers can take the plates off the stack one at a time though the hole in the top. A stack of plates compresses the sling 0.60 m. The spring constant is 200 N/m. What is the elastic potential energy of the spring?

im sorry to ask but have you found the answer yet?

Explanation:

in this image, you can see solar radiation going through ocean water.

no image, but probably absorption

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.