What is the motion of the particles in this kind of wave? The particles will move up and down over large areas.

The particles will move up and down over small areas.

The particles will move side to side over small areas.

The particles will move side to side over large areas.

Gunpowder residue is most likely to show up where on a shooters hands

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.