An electric kettle supplies 20,000J of energy to heat 0.5kg of water. What is the
temperature change? The specific heat of the water is 4200J/(kg*C)

Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?