Physics 115

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Physics 115 Mon, Tue, Thu, Fri 230 - 320
pm Instructor Svetlana Gladycheva
WELCOME!
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Name Major Year Your expectations or concerns
about this class Anything special you would
like me to know about you
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States of matter
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Mass 1 kg
Density Mass of a unit Volume ????m/V
Units?
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Material Density (kg/m3) Ice 0.917 x
103 Aluminum 2.7 x 103 Iron 7.86 x
103 Copper 8.92 x 103 Silver 10.5 x
103 Lead 11.3 x 103 Gold 19.3 x
103 Platinum 21.4 x 103 Water 1.00 x
103 Glycerin 1.26 x 103 Ethyl alcohol 0.806 x
103 Benzene 0.879 x 103 Mercury 13.6 x
103 Air 1.29 Oxygen 1.43 Hydrogen 8.99 x
10-2 Helium 1.79 x 10-1
Standard atmospheric conditions T 0oC, P 1
atm (105 Pa)
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Is pressure on these two divers different?
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Pressure measurements

• open-tube manometer
• barometer

Goethe barometer (water based)
Mercury barometer
aneroid barometer
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Pascals principle Change in pressure applied
to an enclosed fluid is transmitted undiminished
To every point of fluid in the container.