Refrigerant-134a enters an insulated diffuser as a saturated vapor at 80°f with a velocity of 800 ft/s. the inlet area is 1.5 in2. at the exit, the pressure is 400 lbf/in2 and the velocity is negligible. the diffuser operates at steady state and potential energy effects can be neglected. determine the mass flow rate, in lb/s, and the exit temperature, in °f

The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?

(**i would really appreciate if this was answered soon** ) which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)