Lab 8 Execution

not such a stupid question regarding number seven, and the blog had an answer:

"The same maximum - minimum idea applies. Use a ruler to draw the line that has the largest slope that is mostly consistent with the data points, and the line with the smallest slope that is mostly consistent with the data points. Here you are using the scatter of the points rather than their error bars, but the basic idea is the same."

asswipe

I understand how to find velocity in question 9.. but ive tried a few equations for deltav and cannot seem to get it right..

also- is there an mu needed for delta v in 9? and how do we find it?

I am having trouble calculating V (traveling wave velocity) it keeps marking me wrong. anyone know the proper equation to figure this out?? I have calculated my slope so I just need the proper equation to calculate V and Delta V...thanks!!

How should the graphs look? ..also how should the sketch be for the standing wave?

Both graphs should be linear, with a rising slope.

The sketch should show a simple standing wave, similar to the one shown at the beginning of the lab manual. Though, you may want to add in some more 1/2 waves.

If I remember correctly, the equation is: v=2LK
v= velocity
L= length
K= slope

Make sure you are using the correct length!

You don't need a 'mu' for question 9. Simply use the formula:

Delta V = sqrt((DeltaK/K)^2 + (DeltaL/L)^2) X v

So, it's the square root of your (slope error/slope)^2 plus your (length error/length)^2. Then, times this by v, or 2KL.

Make sure you are using the correct length!

hey guys i really need help with Q13. how do u find the error of the slope? cuz when i do the regular equation (max. slope -min slope)/2, i'm getting 3058, which is really huge compared to 10, which other people are saying. pleasee help me out. thanks!