Figure 17-1 shows a wave movement during 1 second. what is the frequency of this wave?

a. 2 hertz
b. 2 meters/second
c. 0.5 second
d. 1 hertz

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.

In which of these cases are the two wave points considered to be in phase with each other?

2. which of the following does not affect the electrical resistance of a body? a. material composing the body b. bodies directly surrounding the body c. length of the body > d. temperature of the body