Which is an example of a chemical change? a) glass melts in a furnace b) liquid water boils into steam c) newspaper decays in a landfill d) rain condenses and falls from water vapor in a cloud

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

One object has a mass of 1 kg and another object has a mass of 3 kg. if the speeds are the same, which of the following is true about their kinetic energy?