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po:
p= po +pgh
po=p-pgh
g:
p= po +pgh
p-po=pgh |:ph
(p-po)/ph=g
p/ph-po/ph=g
g=1/h-o/h
b) Q = mc ( t 2 - t1 )
m:
Q = mc ( t 2 - t1 ) |:c(t2-t1)
m=Q/c(t2-t1)
t2:
Q = mc ( t 2 - t1 ) |:mc
Q/mc=t2-t1
t2=Q/mc+t1