When a current flows through a metal wire, the moving charges are:. a. negative metal ions.
b. positive metal ions.
c. only electrons.
d. only protons.
e. both protons and electrons.

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

Boxing gloves are padded to lessen the force of a blow. (a) calculate the force exerted by a boxing glove on an opponent’s face, if the glove and face compress 7.50 cm during a blow in which the 7.00-kg arm and glove are brought to rest from an initial speed of 10.0 m/s. (b) calculate the force exerted by an identical blow in the gory old days when no gloves were used and the knuckles and face would compress only 2.00 cm. (c) discuss the magnitude of the force with glove on. does it seem high enough to cause damage even though it is lower than the force with no glove?