The quantity of heat ?Q? that changes the temperature ??T? of a mass ?m? of a substance is given by ?Q? = ?cm???T?, where ?c? is the specific heat capacity of the substance. For example, for H2O, ?c = 1 cal/g°C. And for a change of phase, the quantity of heat ?Q? that changes the phase of a mass?m? is ?Q? = ?mL?, where ?L? is the heat of fusion or heat of vaporization of the substance. For example, for H2O, the heat of fusion is 80 cal/g (or 80 kcal/kg) and the heat of vaporization is 540 cal/g (or 540 kcal/kg). Use these relationships to determine the number of calories to change (a) 1 kg of 0°C ice to 0°C ice water, (b) 1 kg of 0°C ice water to 1 kg of 100°C boiling water, (c) 1 kg of 100°C boiling water to 1 kg of 100°C steam, and (d) 1 kg of 0°C ice to 1 kg of 100°C steam.

1/11/17 PHYS 202 The syllabus is online Chapter 11 Preview: The basic Energy Model This chapter is about thermal energy, chemical energy, and energy transfers in the form of heat Work and heat are energy transfers that change the system’s total energy. If the system is isolated, the total energy is conserved o If energy goes into the system from the environment, the system’s energy increases, opposite the system loses energy If Environment pushes an object, kinetic energy is exerted thus moving the object. Then it stops based on friction, increasing the thermal energy, then it leaves and cools. Clicker Question: Christina throws a javelin into the air. As she propels it forward from the rest, she does 270J of