Acarnot heat engine operates between temperatures th and tc.
(a) if th = 500k and tc = 350k, what is the efficiency of the engine?
(b) what is the change in its efficiency for each degree of increase in th above 500k?
(c) what is the change in its efficiency for each degree of change in tc?
(d) does the answer to part (c) depend on tc? explain.

Explanation:

Given

Temperature of higher source

Temperature of low source

(a)Efficiency Of Carnot engine

(b)Now if

then

for 1 K increase in increase in efficiency is given by

(c)For 1 K change in

now

change in

(d)Yes the higher the value of lower will be the carnot efficiency

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

d. platinum would have the greatest temperature increase because it has the lowest specific heat.