Answer:
Optimal aspect ratio = 1
Explanation:
From Chvorinov's Rule,
Where
T = solidification time
c = mold constant
For the riser to have the longest solidification time:
We have: D = h
Therefore,
To have to longest solidification time, D = h
Therefore the best aspect ratio would be,
Answer:
The answer is "0.147 nm and 99.63 mol %"
Explanation:
In point (a):
find:
d(062)=?
formula:
In point (b):
formula:
that's why the composition value equal to 99.63 %
Answer:
Work = 651,1011 kJ
Explanation:
Let´s take the car as a system in order to apply the first law of thermodynamics as follows:
Where
And considering that there is no mass transfer and that the only energy flows that interact with the system are the heat losses and the work needed to move the car we have:
Regarding the energy system we have the following:
By doing the calculations we have:
Consider that in the previous calculation, the kinetic and potential energy terms were divided by 1.000 to change the units from J to kJ.
Finally, the work needed to move the car under the required conditions is calculated as follows:
Consider that in the previous calculation, the heat loss was changed previously from BTU to kJ.