PSC 1121 - PSC 1121 1 CO2 means that the molecules have one...

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PSC 1121 1. CO2 means that the molecules have one carbon atom and two oxygen atoms 2. Pressure P=f/a do F=ma to find F ( a=9.8 ) 3. Law of definite proportions-compounds have definite mass ratios of their constituent elements 4. Ideal gas model- making an educated guess about invisible molecules to extract visible, observable properties of gas (ie temperature ) PV=nRT P= pressure, V= volume, n= number of moles T= absolute temp. , R= gas consant 5. Celsius to Kelvin you add 273 t Celsius 6. Pressure container filled with gas increases when it is heated bc average momentum of ach gas particle increases in size 7. Volume of 1000 g of pure gold is 51.8 cm 3 8. 2 objects in thermal equilibrium if they have same temperature, takes more thermal energy to raise temperature of water by kelvins than ice 9. Methods of transporting thermal energy are convection,conduction,radiation 10. Convection- thermal energy transported by movement of fluids Substance specific heat U 3 cal/g K W 4.5 cal/g K 1. The mass of liquid U is 30 g. The mass of liquid W is 20 g. Say that liquid U receives sufficient heat energy from liquid W, and that receiving this  energy heats up liquid U by ΔT = +10K. How many calories is absorbed by liquid U in this process? 2. Do 20 ( mass ) times the substance specific heat then times the change in temperature 11. Archimedes principle- buoyant force= to weight of displaced fluid - Displaced water is like water that spills out of a bathtub - On boats if you displace less water than you occupy then you float
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- Balsa wood floats bc density is very low - 100cc of ice has 92 mg of mass, .092 kg of mass ,.9016 N of weight  force, so ,092 kg of water must be displaced to give buoyancy force 12.Waves transport momentum and energy across space even though  bulk motion of material medium does not occur 13.Distance from trough to trough is the wavelength 14.Distance of wave during one period I wavelength  15.Bernoullis effect- We can understand Bernoulli’s principle by  “watching” a small cube of fluid flow through the pipe (Figure 12-12).  The cube must gain kinetic energy as it speeds up entering the narrow  region. Because there is no change in its gravitational potential energy,  there must be a net force on the cube that does work on it. Therefore,  the force on the front of the cube must be less than on the back. That  is, the pressure must decrease as the cube moves into the narrow  region. As the cube of fluid exits from the narrow region, it slows down.  - Water pipe with two different diameters with middle part thin - Slower speed at ide are higher at narrow - Pressure differential  - Slower region has higher pressure - Faster has higher - This applies to fluids 16.1 calorie is defined as the amount of heat that raises the temperature 
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This note was uploaded on 08/30/2011 for the course PSC 1121 taught by Professor Velissaris during the Spring '08 term at University of Central Florida.

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PSC 1121 - PSC 1121 1 CO2 means that the molecules have one...

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