f) Given that the nearest neighbor distance (Ro) and the medelung constant (α) for the potassium chloride crystal are 3.14Å and 1.64Å respectively, calculate the binding energy per mole for the solid.(charge on an ion in a kcl lattice = 1.6 x 10-19C). (5 marks)​

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.

If a stone with an original velocity of 0 is falling from a ledgeand takes 8 seconds to hoybthe ground whays the final velocity of the stone

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?