When a solid is placed in a container and heat is applied, a phase change occurs. watch the video and identify which of the following statements are correct. check all that apply. view available hint(s) check all that apply. the temperature increases while all of a liquid is converted to a gas. the average kinetic energy of the system changes while all of a solid is converted to a liquid. temperature remains constant while all of a solid is converted to a liquid. when heat is applied to a solid, the molecular motion decreases as the temperature increases. when a solid is converted to a liquid, heat is absorbed.

Under conditions for which the same room temperature is maintained by a heating or cooling system, it is not uncommon for a person to feel chilled in the winter but comfortable in the summer. provide a plausible explanation for this situation (with supporting calculations) by considering a room whose air temperature is maintained at 20â°c throughout the year, while the walls of the room are nominally at 27â°c and 14â°c in the summer and winter, respectively. the exposed surface of a person in the room may be assumed to be at a temperature of 32â°c throughout the year and to have an emissivity of 0.90. the coefficient associated with heat transfer by natural convection between the person and the room air is approximately 2 w/m2 â‹…â‹… k. what is the ratio of the thermal resistance due to convection to the thermal resistance due to radiation in the summer? what is the ratio of thermal resistances in the winter

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

The movement of electrons between atoms is called an