List three criteria that an engineer might have when designing a lens for a microscope. What is the function of a microscope, and what
characteristics should the lens have to help the lens accomplish that
function?

In what direction does the medium move relative to the direction of the wave? explain.

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?

Argon, neon, and xenon are examples of