At the same instant that a 0.50-kg ball is dropped from 25m above earth,? at the same instant that a 0.50-kg ball is dropped from 25m aboveearth, a second ball, with a mass of 0.25 kg, is thrown straight upward from earth’ssurface with an initial speed of 15m/s. they move along nearby lines and pass each other without colliding. at the end of 2.0 s the velocity of the center of mass of the two-ball system is:

On a hot saturday morning while people are working inside, the air conditioner keeps the temperature inside the building at 22degreesc. at noon the air conditioner is turned off, and the people go home. the temperature outside is a constant 33degreesc for the rest of the afternoon. if the time constant for the building is 4 hr, what will be the temperature inside the building at 4 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? at 6 : 00 font size decreased by 2 upper p . font size decreased by 2 upper m .? when will the temperature inside the building reach 24degreesc? 324281