Refrigerant 134a flows at steady state through a horizontal tube having an inside diameter of 0.05 m. the refrigerant enters the tube with a quality of 0.3, temperature of 36°c, and velocity of 12 m/s. the refrigerant exits the tube at 9 bar as a saturated liquid. determine: (a) the mass flow rate of the refrigerant, in kg/s. (b) the velocity of the refrigerant at the exit, in m/s. (c) the rate of heat transfer, in kw, and its associated direction with respect to the refrigerant.

Need in all of themmm only answer if you know pls

Asubject in a clinical research trial experiences a serious, unanticipated adverse drug experience. how should the investigator proceed, with respect to the irb, after the discovery of the adverse event occurrence? a. do not report the adverse drug experience to the irb since it is a common adverse experience. b. report the adverse drug experience to the irb only if there are several other occurrences. c. report the adverse drug experience as part of the continuing review report. d. report the adverse drug experience in a timely manner, in keeping with the irb's policies and procedures, using the forms or the mechanism provided by the irb.

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm