Labprep - Q8

need help with question 8, not sure where to even begin....i can help with the rest of the lab

since E= deltaV/deltax ...its in errors and uncertainty.

DeltaE=
sqrt((DdeltaV/deltaV)^2 + (Ddeltax/deltax)^2)*E

Question 4: (3 points)

Can someone help with question 4 below?

Lab 1 Electric Field and Potential - Voltages:
The sketch below shows the elements for the measurements of the equipotential lines in the "parallel plates" arrangement.. Select all correct statements.



The voltage between points 1 and 2 is "zero" (not more than a couple of mV)
The voltage difference between positions 1 and 3 is equal to the voltage difference between positions 1 and 4
The voltage difference between positions 1 and 2 is equal to the voltage difference between positions 3 and 4
The voltage between points 1 and 3 is less than 1/10 of the voltage between the two plates
With the dry cell -(+) terminal connected to the low (high) voltage plate the potential increases as you move from position 3 to position 1
The voltage between points 1 and 3 is less than the voltage between points 1 and 2

I cant figure out 4 or 7 can someone help?

Question 7: (7 points)
Lab 1 Electric Field and Potential - Error of Voltage Difference :

Give the expression for the absolute error of the voltage difference in terms of the absolute errors of the two voltages. (Use equation (6) of "Error and Uncertainty").
(Use deltaV_1 and deltaV_2 for. )

I already finished my quiz and forgot what I put and now that we don't log into mapleta i cant go back and check my answers but for #4 I believe there were three different answers... the last one was definitely right, and then i think the first about it being zero. and then..maybe the second to last one? I'm not sure but just go with the first two i said and then maybe guess and check.

And for #7, again I'm not certain because I can't look it up on mapleTA but i think it was something like this:

sqrt((delta_V1)^2+(delta_V2)^2)

wat r the formulas for #6 and #7
I am really having a hard time with both of them

anyone got #6, plz share

sqrt((deltaV_1)^2+(deltaV_2)^2)

sqrt((deltaV_1)^2+(deltaV_2)^2) is form for #7
Anyone got 6????

anyone got #6

for question #6 its

E = deltaV/deltax

has anyone found the correct combo for number 4? i cant manage to get it right

you can find you details look under tools and click maple TA u can find it there

Is your MapleTA all screwy when you get to the middle (around question 4/5/6) and then stops working?

It wasn't like this a few hours ago

(Sunday 2/1 ~ 9:15 PM)

thanks kathleen for the hint
answer to 4 is
The voltage between points 1 and 2 is "zero" (not more than a couple of mV)
The voltage difference between positions 1 and 3 is equal to the voltage difference between positions 1 and 4
The voltage difference between positions 1 and 2 is equal to the voltage difference between positions 3 and 4
those 3 only

mine keeps freezing at question 5 i dont know what to do

We are having lots of problems with MapleTA, it seems to have trouble when there are about 200 open assignments on the system..this is clearly not good enough and we need to find a solution which we are trying to do now.

But you know it might be a good idea for you all to look at and post on the official blog (phy122help at blogspot) instead of discussing server issues here...nobody here is going to go fix the server for you!