Two kilograms of air within a piston–cylinder assembly execute a carnot power cycle with maximum and minimum temperatures of 750 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assuming the ideal gas model for the air, determine (a) the thermal efficiency. (b) the pressure and volume at the beginning of the isothermal expansion, in kpa and m3, respectively. (c) the work and heat transfer for each of the four processes, in kj. (d) sketch the cycle on p–v coordinates.
only velocity uses direction of travel in its calculations.
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it is talking about how from a different perspective things look different.
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mechanical energy of the ball will remain conserved
so here we have
so mechanical energy will remain same at all positions
now when ball comes to position of 1 m height then potential energy is given as
now since total mechanical energy is conserved so we will say
so we have
its mechanical energy = 3.92 j
its potential energy = 1.96 j
its kinetic energy = 1.96 j