1 answer

The questions concern water flowing in or from a hose. The cross section of the hose...

Question:

The questions concern water flowing in or from a hose. The cross section of the hose is circular. The circumference of a circle is 2πR and the area of a circle is πR2, where R is the radius of the circle. 1 milliliter = 1 cm3.

A. If the inner diameter of the hose is 1.13 cm, and the water flows in the hose with a speed of 0.89 m/s, what is the volumetric current Q of the water flowing in the hose (in milliliters per second)?

B. If the inner diameter of the hose is 1.2 cm, but you partially cover the opening of the hose leaving an open area of 0.62 cm<sup>2 </sup>at the end of the hose so that you can spray your friends. The water flows out at 3.3 m/s. What is the volumetric current in milliliters per second now?


Answers

Z at aj The volume flow rate throrga a cross section io givenas &=dr Au Va volume U=opeed of flow &= AU=TRU A = Area of froso= 0-62 cm? = 330 cmp Now Area A speed with the the which His coming outz 3-3 mis Now volume flow rates 0-62 x 33.0 cm3 S. =

final answer A part 89.26 ml/s

B part 204.6 ml/s

.

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