At a hypothetical plane surface normal to the unit vector n there is a plane isotropic source of radiation of strength sa (cm-2 s-1). in terms of sa, what is (a) the net flow rate jn and (b) the flux density ¢ at the plane?

6–55 refrigerant-134a enters the condenser of a residential heat pump at 800 kpa and 358c at a rate of 0.018 kg/s and leaves at 800 kpa as a saturated liquid. if the compressor consumes 1.2 kw of power, determine (a) the cop of the heat pump and (b) the rate of heat absorption from the outside air.

Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.