A baseball player does 1234 joules of work when hitting a baseball into the left feuld. Assuming the baseball landed 100 m away from the home plate how much force did the player use to hit the ball

Rain is pulled by gravity which is a non contact force

Because the dept in the ocean

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.