A Player with a Positive attitude toward officials demonstrates which of the following?

How would doubling the made of an object change the objects potential energy

An object has a weight of 500 on earth what is the mass of this object

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?