#$&*
course phy 122
• Watch the KEx and KEy values as they change with each collision, representing the total x and y kinetic energies of the particles. -x values being the speed of the particles moving horizontally, and y values being the speed vertically, constantly changing because the particles are colliding.
• Watch the 'red' particle for a couple of minutes, estimating the average time between its collisions and its average speed (one of the speeds given near the top of the screen corresponds to that of the 'red' particle--which is it?).
-the dos program doesn’t quite show the top of the screen, and the red particle moves very fast. The windows based program shows the red particle moving slowly compared to the green particles. It seems to make a collision perhaps once every second, but it is probably more on the average of 1 ever 0.5 or 0.25 of a second.
• Watch the 'blue' particle, and speculate on what property of this particle is different from that of the other particles.
-the blue particle has an atomic mass of 4, which I would have said the green particles were protons, less an amu than 1 would imply electrons. Protons and neutrons have atomic masses of about 1, and electrons 0.0005 or something. Anything greater than 1 would have to be a combination of atoms, an element most likely a small and simple one in this case.
• Watch as the 'red' particle sometimes turns yellow. What causes this? What property does the particle have when it is yellow?
- The dos and windows version must be for 2 separate things, I assumed they were the same program, in the dos program the red particle does occasionally turn yellow when it collides with a freely floating yellow particle. Some form of chemical reaction is a likely representation here. Perhaps it is of a different polarity, becoming some form of ion.
• What might the graphs represented at the right of the screen represent?
-it is difficult me to speculate with the minimal amount of chemistry I’ve had so far, but perhaps it is a representation of the amount of atoms, particles, gasses, or whatever at work, their relative position to each other, their polarity, or how they are reacting with one another. Also the speed at which they are moving, there are many possibilities to this question.
• Strike the 'S' key to stop the simulation, and if you are done give the appropriate response to the prompt to quit the program. CTRL-ALT-DELETE will also stop the program, but if you're not careful it will reboot your computer so avoid that option if you can.
"
@&
Very good.
Actually the 'yellow' color indicates that a particle's speed is in a certain range. But this is almost impossible to determine with the speed of the simulation.
*@