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Old Dec 30th 2009, 10:27 PM   #1
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Physics Liquids - Homework Help

1. How much pressure is needed in ground-based water pipes to pump water up to the restaurant on the top floor of the World Trade Center, 410m above the ground ?

2. Cadir is basting a roast turkey with a meat baster that creates a pressure of 9.980x10^4 Pa when the plastic bulb is squeezed and released. If turkey juice rises 0.0900m up the tube of the baster, what is the density of the juice ?

3. A 5450m^3 blimp circles Fenway Park during the World Series, suspended in Earth's 1.21kg/m^3 atmosphere. The density of the helium in the blimp is 0.178kg/m^3. a) What is the buoyant force that suspends the blimp in the air ? b) How much does this buoyant force compare to the blimp's weight ? c) How much weight, in addition to the helium, can the blimp carry and still continue to maintain a constant altitude ?


Please show formulas and explain how to solve.
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Old Dec 30th 2009, 11:26 PM   #2
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Please answer ....
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Old Dec 31st 2009, 01:46 AM   #3
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Acording to the rules of this forum, you need to post your attempt or state where you are stuck.
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Old Dec 31st 2009, 04:39 AM   #4
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I need the correct formula and help understanding the problem.
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