# Lab 9 Execution

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## Lab 9 Execution

Let's get the ball rolling please

How are you guys getting the wavelength (m)?
- i tried 1/ {(1/2^2)-(1/n^2)}

with the value of (1/2^2)-(1/n^2) i thought that was (1/wavelength) which i tried entering into the appropriate column but only one lights up o.o

any ideas on this? my values of m won't light up either, did you guys account for a distance difference?

thanks

:)
Guest

## Wavelength

d*sin(theta)= m(wavelength). but my answers arent coming out correct. can someone explain in better detail how to get the wavelength?

k8
Guest

## slope

Does anyone know how to find the error of the slope?

help1234
Guest

## wavelength

0.0254/13400=1.895E-6

physhelp
Guest

## error of slope

does anyone know how to solve for error of slope besides just putting in random numbers. Is there a calculated value i can use?

physhelp
Guest

## delta (1/lambda) and error of slope

does anyone knows how to find delta (1/lambda) and error of slope

guest 01
Guest

## x

On excel, it asks for positions, which me and my partner have changed the numbers, meaning we subtracted the distance from the distance where the gas tube was to have the position, those numbers i used for the first table positions, but then wat do we put in for x the table below??

guest000
Guest

## Re: Lab 9 Execution

For x, or the positions of the different colors, just take the difference between your right position and left position and put it into meters.

anyone know how to find relative error in x/2y or error in 1/lambda? thanks

physics
Guest

## Error in slope

To find the error in the slope, you take the calculated relative error of x/2y and multiply it by your calculated 1/lamdba

yeppp
Guest

## Re: Lab 9 Execution

sry that was for delta 1/lambda

yep yep
Guest

## lab 9

Hey guys

I need help in finding

* Relative error x/2y

* how to find the degree

thanx

sara
Guest

## Re: Lab 9 Execution

For degrees, you do tan-1 of your x/2y value

physics
Guest

## lab 9

thanx

I only need Relative error x/2y now

sara
Guest

## Re: Lab 9 Execution

Hi

How do u find these

physics
Guest

## Error of Slope!

hey the slope is the exact # given on the graph after it it plotted. but, i was wondering how to get error of slope. or if we just make up a number how do we do that? thankss!

k8
Guest

## Re: Lab 9 Execution

relative error in x/2y is just
(errorx/x) for me the error in y was so small i didnt bother calculating it and you dont have to multiply by any value since it is a relative error
how did you find lambda?

1
Guest

## rel error

just use equation seven in error and analysis to get the relative error

soc
Guest

## Error of x

Im struggling to find the error or x. I thought it would be the same as my other errors (.003m) but its not working... any ideas?

phygirl
Guest

## x??

hye guys, how you get x? I tried adding together my the distances for each color band and that didn't work, what should I do?

yep
Guest

## Re: Lab 9 Execution

I still can't figure out

relative error in x/2y

can someone show work or something plz

phys
Guest

## Re: Lab 9 Execution

nevermind i got it
how do u find this out

phys
Guest

## ERROR OF SLOPE

anyone got any ideas on ERROR OF SLOPE??? anything at all???

guest_01
Guest

## Re: Lab 9 Execution

heyyy
how do u guys find Δ(1/lambda)

girll
Guest

## Re: Lab 9 Execution

guest_01

can u help me with my question so i can see ur question

girll
Guest

## error or lambda

girll

to find error of lambda you take ur error of x/2y and multiply it by ur 1/lambda

guest_01
Guest