Day 11 c22 Flux and ->Gauss's Law of Flatland and 3 dimensions, Microwave different equipments <-

Lab Report Day 11

Gauss's Law of Flatland and 3 dimensions

The same drawing labeled and answered for L1, L4, L3 below.

Charge enclosed by arbitrary surface, and lines of flux in and out of surface shown. 

Number of field line is proportional to charge enclosed.

Internal Q=0

Lightning shock scenario, we chose the 4 

Three important variables for integrating length, area, and volume.

3 variables used for flux questions.

Microwaving fork
didnt have sparks as opposite to expectations.

Accumulation of charges on especially the tip of the fork.

Process of Burning Memory disks. The tiny plating in #um caused the sparks of light and damage in the front and back of the memory disc.

Burning of Memory Disc microwaved

Explainations of burned disc in microwave.

Also because the um sized plating on top and back of the disc that accumulates too much charge.

Prediction of Soap in microwave
Result, it didnt melt but become fluffy
shown in the picture below.

 Soap used in the Lab was broken down in smaller pieces for more visual effect. However, nothing happens to the soap in the microwave.

Cant see anything inside because nothing happening to soap.

When ball was standing up of spherical
geometry, it did not have spark
but once it was lying on its side, immediately
there were sparks shown in
video below.

Microwaved grapes that didnt show any effect.
However, it was shown to be sparkling in
youtube video below. 

Microwave is having technical difficulties
as Prof Mason changed a older Panasonic
Microwave.

Jimmy's Caprisun was used to
hopefully create some visual effects.
Result, It shines blue fashes of light.

Microwaving Caprisun.

 Upon further analysis, many types of alcohol burn as blue fire, such as ethanol, methanol, and isopropyl alcohol. Natural gas also burns with a blue flame. Furthermore, metallic pure Zinc can also produce blue fire when burned.  

Double Flame inside

Microwaving light bulb, red to green color shined.
First Argon gas burned, second glass melt
due to high amount of electronegmatic waves
gathering around the edges of the glass to break it.

Microwaving Grapes.

Microwaving of Grapes in a line.

Microwaving Caprisun 2nd time.

Overall, this lab was intensely fun because the amount of demonstrations challenged with previously held beliefs about how physics should be applied to result of things being microwaved.

Lab 10 Electrical field of 21:-> trajectory of electron into two plates, Faraday's Cage, Needle Bed, Active physics, <-

trajectory of electron into two plates

Electron passing a E field.

Double torque on two side.

This is called a electric dipole pair at angle. with the formula \tau=pEsin(\phi). p is the diagonal vector connecting the two F and F-.  

Also, the magnitude of the torque depends on the angle between the p and E which is \phi. Also, the angle of\phi 90 is the maximum torque for the system of electric dipole system.

Calculation steps.

Steps of derivations of hollow sphere of flux.

Faraday's Cage

Faraday's cage. Setup.

Fraday's cage explanation. in flux's perspective.

As shown above, the inside of the aluminum foil in the cage did not move at all, but the ones outside did move a by approximately 4 cm away from cylinder. We predicted wrong because we did not take into account of shielding. We concluded there is a shielding for the inside and the foils on outside were pushed even further because inside foil did not move. 

E field flux of two point positive and negative particles.
Needle bed

Closeup of needle bed when teacher sit on it.

Add caption

Overall, needle bed is a flux model. The nails are all normal to the surface and think that each nail is a flux line normal to the surface as an electric field vector. Then when it is 90 degree angle, as the rectangular shaped empty surface goes through nail, the electric field vectors are maximum. However, when the surface of empty rectangular is parallel to the modeled flux lines the field vectors are zero.

This one works with Flux as it has to be perpendicular to the surface to flow out at the same rate just as the force is the same at every point of needle so professor doesnt get hurt sitting on it.

Active Physics

Questions of Active physics calculated on the board.

Electric field lines for 1 nC is 5 and has 15 if there is 3 nC. Also, there were 5 field lines for -1 nC. Thus , it was concluded from beginning there were 5 lines representing each charge.

Extra 5 % midterm Credit

Rama spectroscopy speaker and device.

Lab 9 electrical Field ->Electric Field(Ef), ActivPhysics simulation questions, 3D Models, Superposition of Electric Field Vectors(proof of vector addition), Extended Charge Distribution, Electric Hockey<-

Here demonstrates the strong nuclear forces at work by explaining through the Feynman diagram of photons.

In the class, we were realizing the power of gravity. First, historically, people formulated is that there is a graviton, a massless particle that is emited by both objects that were attracted toward each other. Later, we find out we related our universe to the space time continuum. Inside space time, objects warps space and creates a pull inward thus showing a presentation of the picture above.   

 

In the above four pictures, Professor Mason used his polystyrene plate to make two hemispheres resemble positive and a negative charges that act as dipoles to help students visualize the attraction of marble into the negative and repelling force from the positive side.

This was the calculation spreadsheet of the different distances the equation E=Kq/r^2

http://media.pearsoncmg.com/bc/aw_young_physics_11/pt2a/Media/Electricity/1104PointCharge/Main.html

Calculations of vectors

3 Charges would repel and spread out the max distance, which would have a distance geometry of equilateral triangle.

Calculation steps.

More calculation steps

Data for dQ E, Ex, Ey, Q and k.

Graph for dQ and r and other variables relationships as Total E is approaching 6.0e4.

Calculation of Efield.

Here, Prof mason shows how to play a easy level of electric hockey. 

Hw
From the ice hockey challenge we had done several tries and used various method to find the best efficient way to make a goal. The best we found was going outside the box. But shortly after the group found the answer, I found the way to go inside the box and make a goal which was initially conceptually not easy because the whole screen is a vector field and there is a need to do some trials and errors to get the hang of how the charge will fly a parabolic path we want.

Here is the way I used 10 charges to beat this level the normal way.

From a another perspective I have gained enough understanding of electric hockey trajectory, I learned to control the trajectory using only electron for both level 2 and 3 shown below.

Beating level 3 with one charge.

Ice hockey game is very interesting
Theoretically one would need to be really be skillful to use 1 charge to make both levels.
However, upon further analysis, one can do it with zero charge by guiding almost in and drop the charge with the correct trajectory path.