Which of the following will result in the highest conductance ?
a. large cross-sectional area, short pipe
b. large cross-sectional area, long pipe
c. small cross-sectional area, short pipe
d. small cross-sectional area, long pipe

small cross-section area,long pipe

Explanation:

Conductance is a measure of how easily the current can flow through a electrical component.

It is the inverse of resistance.

Conductance is given by

where is conductivity(constant for a component), is the length of component parallel to the flow and is the area of cross-section of the component perpendicular to the flow.

So,conductivity increases with increase in and decreases with increase in

So,small cross-sectional area and long pipe has high conductance.

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.

To a fellow spongebob-ian i will be glad to , the cheetah didn't get far on purpose because he's a cheetah  ( ͡° ͜ʖ ͡°)