An inventor claims to have invented a heat engine that operates between the temperatures of 627°c and 27°c with a thermal efficiency of 70%. comment on the validity of this claim.

Answer Explanation:

the efficiency of the the engine is given by=1-

where T₂= lower temperature

           T₁= Higher temperature

we have given efficiency =70%

lower temperature T₂=27°C=273+27=300K

higher temperature T₁=627°C=273+627=900K

efficiency=1-

                =1-

                 =1-0.3333

                 =0.6666

                 =66%

66% is less than 70% so so inventor claim is wrong

the warning light flashes for a second or two when the engine starts. if it stays on, there's must be something wrong with the coolant. you should never dare to continue driving when the light is on. pull over as soon as possible and shut the engine off.

hope this is what you're talking about

answer:

e ngl my brother is tho

explanation: