Answer:
We would need background context,
Explanation:
Then I would be happy to help!
Answer:
A.
The power generated by a wind farm is not constant because of irregular wind patterns.
Answer:
135 hour
Explanation:
It is given that a carburizing heat treatment of 15 hour will raise the carbon concentration by 0.35 wt% at a point of 2 mm from the surface.
We have to find the time necessary to achieve the same concentration at a 6 mm position.
we know that
where x is distance and t is time .As the temperature is constant so D will be also constant
So
then
we have given
and we have to find
putting all these value in equation

so
The ratio between a and b is 1/3