Lab 8 Execution

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Post  Lab on Tue Apr 14, 2009 8:42 pm

Lab 8 Execution

Lab
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Post  matrix on Tue Apr 14, 2009 9:00 pm

I have a question

for Deltao/o

is deltao same value as h_o

if not is deltao the error .002 ??

matrix
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Post  lab8 on Tue Apr 14, 2009 9:04 pm

i put 0.002 as the error for both ho and o.

does anyone know how to get the delta of f?

lab8
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Post  guestman on Tue Apr 14, 2009 11:33 pm

anybody know how to get error of f? Tried the prelab formula and the prelab formula x f^2. Nothing works!

guestman
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Post  asds on Tue Apr 14, 2009 11:38 pm

How are you guys drawing the sketch?

asds
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Post  soc on Wed Apr 15, 2009 11:59 am

.002

soc
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Post  guest786 on Wed Apr 15, 2009 12:09 pm

I got .0025 and it works

guest786
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Post  super mo on Wed Apr 15, 2009 1:10 pm

sqrt((deltao/o)^2+(deltai/i)^2)*your value for f
to get the other errors follow the same idea

super mo
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Post  Delta F on Wed Apr 15, 2009 1:48 pm

I can't get delta f for the life of me! help!

o [m] i [m]
0.316 0.066
0.0025 0.0025

F = 0.05459
thanks!

Delta F
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Post  super mo on Wed Apr 15, 2009 4:24 pm

sqrt((0.025/.316)^2+(0.025/0.066)^2)*0.05459 = 0.002112
if it is not being marked as correct try using 0.002 as per lab manual for the error and try the calculatoin again.

super mo
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Post  super mo on Wed Apr 15, 2009 4:28 pm

I just saw that I posted 0.025 I did in fact plug 0.0025 into the calculator. Sorry for the confusion.

super mo
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Post  :) on Wed Apr 15, 2009 7:02 pm

awesome guys, thanks Smile

:)
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Post  maria on Thu Apr 16, 2009 9:29 pm

I really need help in calculating the magnification for h_0 and h_i and the 2nd one with h and i

maria
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Post  maria on Thu Apr 16, 2009 9:34 pm

never mind i got it. Smile

maria
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Post  guesttt on Thu Apr 16, 2009 10:19 pm

can anyone tell me what they are putting for "is the about vaule for f consistent with the nominal vaule of 5cm?" and also how to find magnification and errors? thanks

guesttt
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Post  error of on Thu Apr 16, 2009 11:11 pm

I couldn't get the error of f, i tried the equation above and the one on prelab. please help

error of o, i = 0.0025
o = 0.072
i = 0.228
f = 0.05472

the delta f i got is 0.00199, but it wouldn't turn green. and is the focal length calculated consistent to the 5cm?

Thanks

error of
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Lab 8 Execution Empty calculating magnificatioin

Post  newtothi on Fri Apr 17, 2009 2:54 am

hi can anybody help me on how to find magnification

newtothi
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Post  question on Fri Apr 17, 2009 11:50 pm

for the excel sheet, what # ur guys get for object xize h0 and image size hi? i have trouble on it

question
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Lab 8 Execution Empty Error or F

Post  PHygirl on Sun Apr 19, 2009 12:12 pm

I know there are posted solutions for the error of f, but for some reason my value is not working!!

o: .061
i: .239
error: .002

f: .0485

and I keep coming out with .00164 as the error but its not working. Sad this is driving me crazzzzyyy, is there an error with the excel sheet or something, or is everyone getting it fine?

PHygirl
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Lab 8 Execution Empty New Excel Sheet

Post  _Guest on Sun Apr 19, 2009 12:44 pm

I was having trouble on the error of f too but they posted a new excel sheet and my number works now Smile

_Guest
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Post  PHygirl on Sun Apr 19, 2009 1:25 pm

im using the excel sheet thats posted now and its STILL not working tho. my error of f is really driving me up a wall.

o: .061
i: .239

error for both: .002

f: .0485

all my values are in m, and i keep getting .0016411 and its not working no matter how i enter it. SOMEONE PLZ PUT ME OUTTA MY MISERY!!

PHygirl
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Post  _guest on Sun Apr 19, 2009 2:00 pm

Use the error of (1/f) in the prelab and multiply that by f^2
error of f = sqrt(((.002/.061)*(1/.061))^2+((.002/.239)*(1/.239))^2)*.0485^2
error of f = .001267

_guest
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Lab 8 Execution Empty errors of the magnification

Post  Guest123 on Sun Apr 19, 2009 11:00 pm

how do u calculate the errors in above for the magnification?? please help! =) thanks!

Guest123
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Post  _guest on Sun Apr 19, 2009 11:45 pm

error =SQRT((deltah_o/h_o)^2+(deltah_i/h_i)^2)*magnification calculated
make sure you put your error in as a positive value

_guest
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Post  jimmy on Mon Apr 20, 2009 11:06 pm

what do you have to put in the question where they ask you to say if your number is consistent or not? I'm using yes, no, consistent, etc, and they're all not working. help would be appreciated.

jimmy
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