
The factor by which his time be cut if he uses another diameter hose, is should be calculated.

Answer to Problem 51P
The time factor is
Explanation of Solution
Given info:
Diameter
Formula used:
According to the Poiseuille's formula
Where,
Calculation:
According to the question, all other conditions remain unchanged which means that pressure is constant, viscosity coefficient, and length same but radius is different.
According to this formula time is inversely varies with the square of the radius. So,
Now the factor is
And the factor which will be cut is
Conclusion:
The time factor is
Chapter 10 Solutions
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