# lab 2 help

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## lab 2 help

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
Guest

## Lab 2 #3

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

pinkdino
Guest

## Lab 2 #3

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

pinkdino
Guest

## Lab 2 #3

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

pinkdino
Guest

## lab 2

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

guest111
Guest

## lab 2 cont

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

guest111
Guest

## Questions 3 and 5

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

Guest001
Guest

## reading # 3 and 5

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

JJ
Guest

how do you get the period?

dimep52d
Guest

## Re: lab 2 help

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

Kathleen

Posts : 42
Join date : 2008-12-18

## Re: lab 2 help

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

jen
Guest

## Error of the Frequency

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!

k8nl8
Guest

## error

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

Delila
Guest

## excel analysis

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

cd
Guest

## Prep Quiz 3, 5

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...

oh physics!!

vdot
Guest

## I got number 3!!

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!!

vdot
Guest

## Number 5

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.

Also, isn't s the unit for period?

vdot
Guest

## error of Period T

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

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

:)
Guest

## Re: lab 2 help

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!! =)

guest1
Guest

## Re: lab 2 help

theres only one excel analysis sheet for lab 2 right?

guest_01
Guest

## Question 5

the answer for period is .0003

sos
Guest

## Execution

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

meg
Guest

## lab question

How do you find the error of T_2-T_1?

Executio
Guest

## Excel help

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

ahhh
Guest

## Re: lab 2 help

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.

jimmy
Guest