Answer:
(a) 2.5 ksi
(b) 0.1075 in
Explanation:
(a)

Making
the subject then

where
is the stress and
is the strain
Since strain is given as 0.025% of the length then strain is 
Now substituting E for
then

(b)
Stress,
making A the subject then


where d is the diameter and subscripts o and i denote outer and inner respectively.
We know that
where t is thickness
Now substituting



But the outer diameter is given as 2 in hence



As already mentioned, 

Answer:
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Answer:
a) the log mean temperature difference (Approx. 64.5 deg C)
b) the rate of heat addition into the oil.
The above have been solved for in the below workings
Explanation:
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