A ball is tossed straight up and then falls straight back down. During which portions of the motion does the ball's acceleration vector point upward?.

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

What is an aquifer for science class

A6.0-μf air-filled capacitor is connected across a 100-v voltage source. after the source fully charges the capacitor, the capacitor is immersed in transformer oil (of dielectric constant 4.5). how much additional charge flows from the voltage source, which remained connected during the process?