What is a closed loop of wire where charges continuously move

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

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?