Find the power required to give a brick 90 j of potential energy in a time of 2.2 s .

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume

What caused magnetic fields? what happens if you keep breaking a magnet in two until you reach a single atom?