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Question Part Points Submissions Used
Question Part Points Submissions Used
Question Part Points Submissions Used
Question Part Points Submissions Used
Question Part Points Submissions Used Question Part Points Submissions Used The Venturi tube shown in the figure below may be used as a fluid flowmeter. Suppose the device is used at a service station to measure the flow rate of gasoline (? = 7.00 times 102kg/m3) through a hose having an outlet radius of 1.2 cm. The difference in pressure is measured to be P1 ? P2 = 1.20 kPa and the radius of the inlet tube to the meter is 2.40 cm. Find the speed of the gasoline as it leaves the hose. Find the fluid flow rate in cubic meters per second.

Explanation / Answer

conserving flow rate

v1A1 =V2A2

v1 =V2*1.2^2/2.4^2 =0.25V2

....

bernaulies equation

1/2 *700*(V2^2 -v1^2) =1200

1/2 *700*(V2^2 -(0.25V2)^2) =1200

V2 =1.91 m/s

hence flow rate =V2A2 =1.91*3.14*0.012^2 =8.6*10^-4 m^3/s

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