A beaker is filled with 250g of a mystery substance. The substance is heated from 10°C to 50°C. If 10,000 J of heat were applied, then what is the specific heat of the
substance?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.