Which statements are true about ionic compounds? a. an ionic compound can be named using prefixes. b. an ionic compound is made of a positive cation and a negative anion. c. an ionic compound of two elements has three possible formulas. d. an ionic compound is made of a nonmetal and a metal.

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?

What is a possible result of higher air temperature caused by global warming

Apulley with mass mp and a radius rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot.