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Unformatted text preview: hinojosa (jlh3938) – oldhomework 41 – Turner – (58185) 1 This printout should have 7 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A simple Utube that is open at both ends is partially filled with a heavy liquid of density 1000 kg / m 3 . A liquid of density 349 kg / m 3 is then poured into one arm of the tube, forming a column 14 cm in height, as shown. h 14 cm light liquid 349 kg / m 3 heavy liquid 1000 kg / m 3 What is the difference in the heights of the two liquid surfaces? Correct answer: 9 . 114 cm. Explanation: Let : ℓ = 14 cm , ρ ℓ = 349 kg / m 3 , and ρ h = 1000 kg / m 3 . Because the liquid in the Utube is static, the pressure exerted by the heavy liquid col umn of height ℓ h in the left branch of the tube must balance the pressure exerted by the liquid of height h poured into the right branch, so P + ( ℓ h ) ρ h g = P + ℓ ρ ℓ g . h = ℓ parenleftbigg 1 ρ ℓ ρ h parenrightbigg = (14 cm) parenleftbigg 1 349 kg / m 3 1000 kg / m 3 parenrightbigg = 9 . 114 cm ....
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 Fall '08
 Turner
 Force, Work, Correct Answer, Kilogram, Hinojosa

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