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Kruka [31]
3 years ago
15

If you take out a loan that costs $130.50 over nine years at an interest rate of 10%, how much was the loan for?

Mathematics
1 answer:
ollegr [7]3 years ago
6 0
145 dollars sssssssssssssssssssss
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The answer is below

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6 inches = 6 inches * (1 ft./12 inches) = 0.5 ft.

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The area of cast iron (A) = πD²/4 = π(0.5)²/4 = 0.196 ft²

The velocity (V) = 6 ft./s, the acceleration due to gravity (g) = 32.2 ft./s²

ε/D = 0.0004 ft./ 0.5 ft. = 0.0008

Using the moody chart, find the line ε/D = 0.0008 and determine the point of intersection with the vertical line R = 2.7 * 10⁵. Hence we get f = 0.02.

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h_f=f*\frac{L}{d}* \frac{V^2}{2g}=0.02*\frac{200\ ft}{0.5\ ft} *\frac{(6\ ft/s)^2}{2*32.2\ ft/s^2}=4.5\ ft

The pressure drop (Δp) is:

Δp = ρgh_f = (62.4\ lbf/ft^3)(4.5\ ft)= 280\ lbf/ft^2

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