Which is the best term to describe a chemical reaction in which the reactants have less potential energy than the products? A. thermal conductor
B. thermal insulator
C. endothermic
D. exothermic

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) determine the magnitude and direction of projectile velocity at t= 1.3s b) determine the magnitude and direction of projectile acceleration at t=1.3s

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Ablock of steel has a density of 0.29lbs per cubic inch. if the block has dimensions of 1 inch by 1 inch by 3 inches, what is its weight? a. 0.29lbs b. 0.58lbs c. 0.87lbs d. 1lbs