In which reaction are the atoms of elements rearranged? O A. Two isotopes of hydrogen fuse to form helium.

O B. Uranium-235 breaks apart into krypton, barium, and three
neutrons.

O C. Methane gas combines with oxygen to form carbon dioxide and
water.

O D. Plutonium-240 breaks apart into xenon, zirconium, and three
neutrons.

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

Ababy stroller is a rest on top of a hill which is 10 m high. the stroller and baby have a mass of 20 kg. what is the potential energy of the baby and stroller?

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?