Geocentric theory:

a. was initially rejected
b. was in contradiction to the ideas of ptolemy
c. stated that the sun revolved around the earth
d. all of the above

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.

Answer59.2kg; /

The correct answer is antinodes