Which statements describe nuclear reactions? check all that apply. a. nuclear reactions involve the nuclei of atoms. b. nuclear reactions involve the electrons of atoms. c. the products of nuclear reactions are lighter than the reactants. d. the products of nuclear reactions are heavier than the reactants. e. fission produces energy, while fusion requires energy.

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

Which lists the organs in the correct order as food passes from the mouth to anus?