A boy uses a lawnmower to cut the grass. What does this action demonstrate? F. Work is being done by pushing the lawnmower into motion and changing its position.

G. The position and the motion of the lawnmower do not demonstrate work being done.

H. Work is being done by changing the mower's position but not its motion.

J. Work is being done by changing the mower's motion but not its position.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

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?

While you are driving in the lane next to the curb on a multi-lane road the car on your left suddenly moves toward you lane. they are about toy crash into your front fender. you