W091ALLab09

# W091ALLab09 - PHYSICS 1AL Introduction FLUIDS Winter 09 In...

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PHYSICS 1AL FLUIDS Winter 09 Page - 1 - Introduction In this lab you will investigate several properties of fluids both at rest and in motion. Pre-lab Questions: 1. What is the “specific gravity” of a substance? If a substance has a specific gravity of 7.5 what is its density in kg/m 3 ? What is its density in grams/cc? 2. Ice is less dense than water so it floats in water. But the densities of ice and water are close, so most of an iceberg is submerged, even in salt water which is denser than pure water. a. For the specific gravities of ice and water given in the table on the next page what fraction of the volume of the ice cube in a glass of pure water will be above the surface? If you used salt water of specific gravity from the same table what fraction of the volume of the ice cube would be above the surface? b. If the ice cube’s volume is (1.0 cm) 3 what is the weight of the cube? c. What is the weight of the part of the cube above water level in pure water? d. What is the weight of the part below water level in pure water? 3. Suppose you were on top of a cliff of height h , and threw a ball horizontally with speed v . How far would it go before it hits the ground? (Ignore air resistance) (ie, what is the formula that describes range in terms of horizontal speed and height? 4. Examine the schematic of the tower. Water flows in at the top to balance the water flowing out through the holes, so the height of the water in the tower stays fixed. Take state 1 at the top of the water in the tower and state 2 in the water just as it flows out of the hole. a.

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## This note was uploaded on 04/09/2009 for the course PHYS 1AL taught by Professor Anderson during the Summer '08 term at UCSD.

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W091ALLab09 - PHYSICS 1AL Introduction FLUIDS Winter 09 In...

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