You are installing a heat pump whose cop is half the cop of a reversible heat pump. you plan to use the pump on chilly winter nights to increase the air temperature in your bedroom. your bedroom's dimensions are 5.35 m ? 3.6 m ? 2.7 m. the air temperature should increase from 63° f to 68° f. the outside temperature is 35° f, and the temperature at the air handler in the room is 112° f. if the pump's electric-power consumption is 787 w, how long will you have to wait for the room's air to warm if the specific heat of air is 1.005 kj/(kg · c°)? assume you have good window draperies and good wall insulation so that you can neglect the release of heat through windows, walls, ceilings, and floors. also assume that the heat capacity of the floor, ceiling, walls, and furniture are negligible. (assume 1.293 kg/m3 for the density of air.)

Asystem containing an ideal gas at a constant pressure of 1.22×10^5 pa gains 2140 j of heat. during the process, the internal energy of the system increases by 2320 j. what is the change in volume of the gas?

Critical mass is the of material required to produce a chain reaction. a.) minimum amount b.) atomic mass c.) precise amount d.) maximum amount

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called