How does density affect refraction? Diamonds are a very dense material. Predict what would happen to the light ray if you projected it from the air through a diamond.
pls answer both questions

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves

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?