A Newton's Cradle has 5 spheres. Sphere 1 has an initial momentum of 7 kg*m/s. What momentum will sphere 5 have after the collision

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Which are advantages of renewable resources? check all that apply. renewable energy supplies are completely reliable everywhere. some renewable resources will never be used up. little or no waste is produced by renewable resource plants. electricity can be generated in large quantities. many renewable energy facilities have lower operating costs.

You are given two vectors a⃗ =−3.00ι^ 5.00j^ and b⃗ =5.00ι^ 2.00j^. let the counterclockwise angles be positive.