A reversible power cycle receives energyqh by heat transfer from a hot reservoir at th and rejects energy qc by heat transfer to a cold reservoir at tc. if th= 500?c, tc= 20?c, and wcycle= 1000 kj, what is qh in kj?
a) 1400 kJ
b) 2000 kJ
c) 1800 kJ
d) 2200 kJ