lab 2 help

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lab 2 help Empty lab 2 help

Post  me on Sat Feb 07, 2009 1:22 am

anyone know how to find the battery voltage for the first part of question 3? i can help with any of the other questions..

me
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lab 2 help Empty Lab 2 #3

Post  pinkdino on Sat Feb 07, 2009 2:35 pm

Use the animation tutorial from the following website to show you how to calculate the values. As for the units, it should be V for Volts and s for seconds and these units will ONLY be marked correct when the values are correct. MapleTA does not grade the units and values separately!
Good Luck Smile

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lab 2 help Empty Lab 2 #3

Post  pinkdino on Sat Feb 07, 2009 2:36 pm

sorry, i'm not sure why the website did not show up...here i'll try again:

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lab 2 help Empty Lab 2 #3

Post  pinkdino on Sat Feb 07, 2009 2:38 pm

idk why its not working just type in 'voltage on an oscilloscope' on google and click on the 5th link by wisc-online

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lab 2 help Empty lab 2

Post  guest111 on Sat Feb 07, 2009 6:13 pm

1) Voltage, Time

2)A=1 B=4 c=3 d=5 g=6 h=2

3)

4)sqrt(deltaV_high^2+deltaV_low^2)

5)

6)sqrt(deltat_L^2+deltat_R^2)

7)deltaT_N/N

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Post  guest111 on Sun Feb 08, 2009 12:25 am

For 3 and 5 watch the lab video and pay attention to sara, it is hard to explain how to do the voltage......

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lab 2 help Empty Questions 3 and 5

Post  Guest001 on Mon Feb 09, 2009 12:18 pm

I tried the website and i don't seem to understand it. Does anyone have the answers for 3 and 5? Much appreciated

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lab 2 help Empty reading # 3 and 5

Post  JJ on Mon Feb 09, 2009 5:10 pm

reading the graphs are pretty easy, the y axis is volts and the x axis is time, but the value for each division of the axis are changeable, in the question it tells you what each division is set at, the rest is just counting, so if the y division is set for 3 volts and the x division is set for 1 s, a rectangle 3 boxes high by 2 boxes wide would be 9 volts over 2 seconds.... i hope that helps, if not watch the video cause she explains it pretty well

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lab 2 help Empty about question #5

Post  dimep52d on Mon Feb 09, 2009 8:03 pm

how do you get the period?

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lab 2 help Empty Re: lab 2 help

Post  Kathleen on Mon Feb 09, 2009 8:55 pm

For period you do T2-T1/# of waves you counted

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lab 2 help Empty Re: lab 2 help

Post  jen on Mon Feb 09, 2009 8:56 pm

heyy any1 know how to find the error of frequency?? thanks Very Happy

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lab 2 help Empty Error of the Frequency

Post  k8nl8 on Mon Feb 09, 2009 10:27 pm

To get the error of the frequency you:
divide the T(period) error by the T(period) value. then multiply by the Frequency value. tada!

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Post  Delila on Tue Feb 10, 2009 12:16 am

How can I find the error for T(period)?

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lab 2 help Empty excel analysis

Post  cd on Tue Feb 10, 2009 1:38 am

is anyone else having trouble with the period? im doing my T2-T1 value divided by 5 and it marks it as wrong? am i doin somthin wrong becuz that has to be rite

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lab 2 help Empty Prep Quiz 3, 5

Post  vdot on Tue Feb 10, 2009 12:02 pm

Here's my issue:

3. I've gone through the videos... and I thought I understood what she was doing when she was calculating but I'm at a complete lost. I'm having several issues -- I think my counting is off, is there anyway to explain how to retrieve the values. Also, it keeps marking my units wrong, is isnt the voltage in V and the time in s?

5. I'm not even sure how to approach this problem...


Please help!! No
oh physics!!

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lab 2 help Empty I got number 3!!

Post  vdot on Tue Feb 10, 2009 12:09 pm

oh hot dayum!!

Okay. So for number three, just count the boxes literally and multiply by what your scale is.

For example. My scale was .5V and 1s. I counted my height of boxes (which I estimated) to be about 2.75V and multiplied by .5 and then for 1.375. Then I count my width which was 1 box, and got 1 for the time.

My guess for the units where correct the first time around.
Voltage in V and time in s. They wont mark it correct unless the whole answer is correct.

YAY!! Now I'm off to solve number 5. I'll keep ya'll posted!!

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lab 2 help Empty Number 5

Post  vdot on Tue Feb 10, 2009 12:30 pm

So the first two answers are easy...

All you do once again is count boxes. 3 boxes would equal an amplitude of 3V and 6 boxes, 6V...

But the period is what I'm suck on. Arghhh!, I was so close.
Previous posts say to do T2-T1/# of waves... but its not working for me. Or at least I cant figure out the number of waves. My wave is V-shaped.

So I thought Id be 6-3 = 3
and then 3/1= 3s
But thats not working.

Please help

Also, isn't s the unit for period?

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lab 2 help Empty error of Period T

Post  :) on Tue Feb 10, 2009 1:16 pm

hey guys, i know that someone mentioned getting the error of frequency but it also required knowing how to get the error of T, the Period

please help on this one Smile

i can't seem to get it, i'm not sure what values to be using for expression 8.. why does it matter if n = -1 if the expression calls for the absolute value, and why is this formula given when there is no exponent involved, ect. o.o

thank you Very Happy

:)
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lab 2 help Empty Re: lab 2 help

Post  guest1 on Tue Feb 10, 2009 8:50 pm

so for question 5 on the lab in order to find the period....number ur horizontal line with the intervals...my increments were in 50s...so the second peak was at 400 and the 1st peak was at 100...400-100=300

300*1E-6=3E-4s

hope this helps!! =)

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lab 2 help Empty Re: lab 2 help

Post  guest_01 on Wed Feb 11, 2009 12:00 am

theres only one excel analysis sheet for lab 2 right?

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lab 2 help Empty Question 5

Post  sos on Wed Feb 11, 2009 12:53 am

the answer for period is .0003

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lab 2 help Empty Execution

Post  meg on Wed Feb 11, 2009 8:53 pm

How do you find the error for the Period (T) and Frequency?? I cant seem to get it!! Please help..

meg
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lab 2 help Empty lab question

Post  Executio on Wed Feb 11, 2009 9:25 pm

How do you find the error of T_2-T_1?

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lab 2 help Empty Excel help

Post  ahhh on Wed Feb 11, 2009 10:31 pm

does anyone know how to get the errors for Period and Frequency? it's the last 2 boxes on the sheet.
thank you!

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lab 2 help Empty Re: lab 2 help

Post  jimmy on Wed Feb 11, 2009 11:20 pm

to find the period, count up the number of intervals (each interval is one box), I had six boxes. Each box is 50 micro seconds. You multiply the number of boxes by 50, then multiply that number by 10^-6 to convert to seconds.

I had 6 boxes, so that equals 300 microseconds. Then 300 x 10^-6 = 3E-4. Hope that helps.

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