How far is a spring compressed if it has 7400J of spring potential energy and a spring constant of 7300N/m?

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

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.

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.