How would the diameter change if the flash light was moved 3.5 m from the wall A the diameter would remain the same

Bthe diameter would decrease by 30 cm

C the diameter would increase by 15 cm

D the diameter would decrease by 15 cm​

Which of the following is an example of motion in two dimensions?

The two required components for a generator are

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?