Answer to Question #204586 in Physics for John Mark

Question

4. Buoyancy. A slab of ice floats on a freshwater lake. What minimum volume (in m3) must the slab have for a 45.0 kg woman to be able to stand on it without getting her feet wet? (Density of ice = 917 kg/m3, Density of water= 1000 kg/m3)

5. Continuity Equation. A 14.0-cm inner diameter water main

furnishes water (through intermediate pipes) to a 1.00 cm inner diameter faucet

pipe. If the average velocity in the faucet is 3.00 cm/s, what will be the

average velocity (in cm/s) it causes in the water main?

6. Bernoulli’s Principle. Water inside an enclosed tank is

subjected to a pressure of two atmospheres at the top of the tank. How fast (in

m/s) will water move out of a small hole 3.00 m below the top surface of the

water? The density of water is 1000 kg/m3.

Answer 1

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