Sunday, March 27, 2011

Graphs fromt he Lab

Here are the result from the graph we tried to walk

Distance Vs. Time Graph
 
Distance Vs. Time Graph
 
 Distance Vs. Time Graph
 
Velocity Vs. Time Graph
 
Velocity Vs. Time Graph
 
 

Walking the Graph

In class, we had to walk a time vs distance graph and a velocity vs time graph. The distance vs time graph was easier to walk because it measured on how far you are from the sensor. The velocity graph was hhow steady you walk. It took as a few tries for the distance graph to try to get a close to perfect one and it took us many many tries for the velocity vs time graph. The graph for that is still less acurately walked then the distance vs time graph

Right Hand Rule 1 and 2

Right-Hand Rule #1: This rule states that around a conductor, when one wraps his right hand around, the thumb points to the direction of conventional current flow and the fingers point in the direction of the magnetic field. 
Right-Hand Rule #2: This rule states that around a solenoid, or electromagnet, when one wraps his right hand around, the thumb points in the direction of north, (magnetic field) and the fingers point in the direction of conventional current flow.
 

Concept Map

In physics we made a concept map for electricity. It shows all the different terms related to electricity and shows how each of them are connected to each other. This is really helpful if you are a visual learner.  The photo above is a photo of the group whose map was the most clear and readable.

1) Kirchhoff's Law:
For Series:
Current:
It = I1 = I2 = I 3...=In
Potential Difference:
Vt = V1 + V2 + V 3...+Vn
Resistance:
Rt =R1 + R2 + R 3...+Rn

For Parallel Circuit:
Current:
It = I1 +I2 + I 3...+In
Potential Difference:
Vt = V1 =V2 =V 3...=Vn
Resistance:
1/Rt =1/R1 + 1/R2 + 1/R 3...+1/Rn
 
2) Power :  P=VI or P= E/t
3) Conventional Current: the flow of charge from positive terminal to negative terminal
4) Electron flow: the flow of electron from negative to positive terminal.
5) Ohm's Law: R=V/I
6) Current is the amount of charge passed through a point at a given time.
7) Voltage is the potential difference from point A to point B.
8) Finding a slope is rise/run
9) Energy: E=Pt
10) Parallel Circuit: charge flows along two or more paths.