qz10sol_3885f10 - a) What is the mass of the water pumped...

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TA: Tomoyuki Nakayama Monday, November 15, 2010 PHY 2048: Physic 1, Discussion Section 3885 Quiz 10 (Homework Set #12) Name: UFID: Formula sheets are not allowed. Calculators are allowed. Do not store equations in your calculator. You need to show all of your work for full credit. ________________________________________________________________________________ Water is pumped steadily out of a flooded basement at a speed of 6.00 m/s through a uniform hose of radius 0.800 cm. The hose passes out through a window to a street ditch 2.50 m above the waterline.
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Unformatted text preview: a) What is the mass of the water pumped out from the basement in one second? During time interval t, the water moves x = v t in the hose. The mass of water flowing out of the hose in t is m = V = ( r 2 )v t Therefore, the mass of the water pumped out in one second is m/ t = ( r 2 )v = 1.21 kg b) What is the power of the pump? The power of the pump is defined as the work done by the pump in a unit time. The work energy yields P = W/ t = ( K + U)/ t = (1/2)( m/ t)v 2 + ( m/ t)gh = 51.4 W...
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This note was uploaded on 01/25/2011 for the course PHY 2048 taught by Professor Field during the Summer '08 term at University of Florida.

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