Problem 10:A fire hose has an inside diameter of4.5cm. Suppose such a hose carries a water flow of43L/s starting at a gauge pressure of1.65 106N/m2. The hose discharges through a nozzle having an inside diameter of2.8cm. Take the viscosity of water to be 1.005 10-3(N/m2)s. Randomized Variables dh=4.5cm dn=2.8cm P=1.65 10^6 N/m^2 Q = 43L/s

50%Part (a)Calculate the Reynolds number,N_R, for flow in the fire hose to show that the flow must be turbulent, withN_R 3000.

NR=	|

sin()	cos()	tan()
cotan()	asin()	acos()
atan()	acotan()	sinh()
cosh()	tanh()	cotanh()

Degrees Radians

	(	)	7	8	9	HOME
E	^	^	4	5	6
	/	*	1	2	3
	+	-	0	.	END
	()	BACKSPACE	DEL	CLEAR

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50%Part (b)Calculate the Reynolds number,N_R, for flow in the fire hose and nozzle to show that the flow must be turbulent, withN_R 3000.