Exam_3_form D Solutions

Exam_3_form D Solutions

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Unformatted text preview: PHY231 Spring 2013 Section 2 11. A balloon inflated with a gas (density = 0.5 kg/m3) has a volume of 6.00 × 10–3 m3. If the buoyant force (FB) exerted on the balloon is 0.0765 N, what is the density of the air? A) 1.10 kg/m3 E) 0.13 kg/m3 B) 1.60 kg/m3 F) 2.10 kg/m3 FB = ρfVg 3 C) 0.09 kg/m G) 1.50 kg/m3 ρf = FB / Vg = (0.0765N)/(6 × 10−3m 3 ⋅ 9.81N/kg) = 1.30 kg/m 3 D) 1.30 kg/m3 H) 0.11 kg/m3 12. You want to fill a 0.0189-m3 bucket with water to wash your car. Water exits a hose with a speed of 0.61 m/s. The radius of the faucet is 0.0078 m. How long does it take to fill the bucket completely? A) 9.30 s E) 162 s V = Avt = π r 2 vt B) 17.0 s F) 199 s t = V / π r 2 v = 0.0189m 3 / ...
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This document was uploaded on 03/03/2014 for the course PHY 231 at Michigan State University.

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