The angle between the first-order maximum and the central maximum for monochromatic light of 2300 nm is 27 degrees. Calculate the number of lines per centimeter on this grating.

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude

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.

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z