NEED ASAP PLEASE ! A 6.57 kg ball rolls across the street at a rate of 7 m/s. What is the KE of 2 . the ball before it hits the curb?
30 J
225.35 J
160.97 J

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?

If a star is moving toward earth, it is

What effect does the sun have on the earth. written response