A car has a displacement of –140 miles. If east is taken as the positive direction, which option correctly describes the displacement of the car?

The car is east of its starting position but is moving toward the west.

The car is west of its starting position. The car is west of its starting position. , ,

The car is west of its starting position but is moving toward the east.

The car is east of its starting position.

When does your body conduct current more readily?

What are similarities and differences of reflection, refraction, diffraction and absorption?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)