6. The figure shows the interference pattern produced when light of wavelength 500 nm is incident
on two slits. Fringe A is equally distant from each slit. By what distance is fringe B closer to
one slit than the other ?

(a) 250 nm
(b) 500 nm
(c) 750 nm
(d) 1000 nm
(e) 1500 nm

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?