Corinne uses a model rocket in her physical science class. the rocket begins its trip traveling vertically at 22 m s . it reaches a peak height of 24 meters and then begins its descent. just before it hits the ground, it reaches a velocity of 22 m s . which statement is true regarding the rocket's trip? a) the rocket travels a greater distance upward than downward. b) the rocket takes more time to travel up than to travel down. c) the rocket's velocity remains positive during the entire trip. d) the rocket's velocity on the trip down is the negative of the upward trip.

Hot air balloons float in the air because of the difference in density between cold and hot air. in this problem, you will estimate the minimum temperature the gas inside the balloon needs to be, for it to take off. to do this, use the following variables and make these assumptions: the combined weight of the pilot basket together with that of the balloon fabric and other equipment is w. the volume of the hot air inside the balloon when it is inflated is v. the absolute temperature of the hot air at the bottom of the balloon is th (where th> tc). the absolute temperature of the cold air outside the balloon is tc and its density is ďc. the balloon is open at the bottom, so that the pressure inside and outside the balloon is the same. as always, treat air as an ideal gas. use g for the magnitude of the acceleration due to gravity.

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block