Which question can the student ask to determine which sample is in the solid phase?

which sample contains molecules that have a high amount of energy?

whích sample contains molecules that are far apart and moving quickly!

which sample contains molecules that are sliding past one another?

which sample contains molecules that are in an orderly arrangement?

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction

The movement of electrons between atoms is called an

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)