S m

​

15, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction to the west. A graph of her acceleration over time is shown below, where eastward is the positive acceleration direction.

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Three charge are arranged as shown in the diagram. the magnitude of the net electrical force acting on the +6 uc charge, rounded to the tenths place, is .

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?