A water line with an internal radius of 6.5 x 10⁻³ m is connected to a shower head that has 12 holes. The speed of the water in the line is 1.2 m/s.
(a) what is the volume flow rate in the line?
(b) At what speed does the water leave one of the holes (effective radius of = 4.6 x 10⁻⁴ m) in the head?
Give your answers in order to three 3 significant digits with the proper units.

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?