The rod of the fixed hydraulic cylinder is moving to the left with a constant speed va = 18 mm/s. determine the acceleration ab of slider b when sa = 370 mm. the length of the cord is 1515 mm, and the effects of the radius of the small pulley at a may be neglected. the acceleration ab is positive if up.

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.

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z