I-PLEASE HELP-I THERE ARE TWO QUESTIONS (ILL GIVE BRAINLIST)

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.

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?