Lab Report 5

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Question 32

Post  stuck on Wed Oct 22, 2008 5:12 am

did anyone get deltav^2/v^2?

stuck
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Re: Lab Report 5

Post  num 9 on Wed Oct 22, 2008 9:27 am

i am dividing ws by t prime and still getting v' wrong...whats wrong hereee

num 9
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Re: Lab Report 5

Post  Guesto on Wed Oct 22, 2008 12:05 pm

I keep getting some rather large numbers for question 38 and 40. When I enter them, maple TA says the numbers are incorrect.

This is what I did:

KEi-KEi'=X

Then
X/sqrt(DeltaKE^2+DeltaKEi^2)= 20 something
What the hell is going on here?????? Why cant I get the answer, what am I doing wrong?!?!?!?!?

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Re: Lab Report 5

Post  yeahhhh on Wed Oct 22, 2008 12:16 pm

how do i find the ratios...

also is deltavi/vi the same as delta viprime/viprime?

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question1?

Post  guestooo on Wed Oct 22, 2008 1:13 pm

DId anyone get number 1 right? ive tried it a few times and plugged numbers into both equations to figure it out and i cant manage to get it right..

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ratio questions

Post  helpmepl on Wed Oct 22, 2008 4:09 pm

..could anyone point me in the right direction as to how to get the rations in questions 38 & 40..

38:Use the values of question "Lab 5 Part IV Total Kinetic Energies and Errors in Part II (Elastic)" and calculate the ratio of the magnitude of the difference of the Total Kinetic Energies before and after the elastic collision, divided by the absolute error of the difference

40: Use the values of question "Lab 5 Part IV Inelastic Collisions Table 8b Kinetic Energies" and calculate the difference of the Total Kinetic Energy before minus after the inelastic collision of Part III. Divide this by the error of the difference

also.. im having a problem with parts of questions 32 and 34.. for deltavi^2/vi^2... how do we get these numbers? THANKS!

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32

Post  32 on Wed Oct 22, 2008 4:19 pm

does anyone know how to compute deltav_i^2/v_i^2 ?i keep getting it wrong

32
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6

Post  guest101 on Wed Oct 22, 2008 4:35 pm

Seriously... does anyone know the answer to 6.

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6

Post  guest101 on Wed Oct 22, 2008 4:37 pm

nvm got it - for anyone stuck on it the answer is:

sqrt((Deltam/m)^2+(Deltav/v)^2)*p

guest101
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question 11

Post  me on Wed Oct 22, 2008 5:19 pm

hey can someone show me how to do number 11?????? i don't think i even understand the question that is how lost i am.

me
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Question 24

Post  troubled on Wed Oct 22, 2008 6:35 pm

damn...

i was able to get the first 3 parts in Question 24,
but having trouble getting [b]deltap'.
anyone please?

troubled
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question #11

Post  ih8lab on Wed Oct 22, 2008 7:57 pm

sqrt((Deltapprime_b)^2+(Deltapprime_s)^2)

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question 12

Post  ih8lab on Wed Oct 22, 2008 8:01 pm

P=p_1
P'=pprime_2-pprime_1

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Re: Lab Report 5

Post  jsyz on Wed Oct 22, 2008 10:02 pm

question 24
any one have any idea for the Delta p'
i did (deltaw/w)*p' but i keep getting it wrong

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huhh

Post  12345678 on Wed Oct 22, 2008 10:32 pm

that should be right.. are you using the right deltaw/w?

.. were all asking the same question.. and im gonna ask it again.. lol does ANYONE know how to find the ratios for 38 and 40? so many people have asked this but no ones given an answer yet Sad

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Re: Lab Report 5

Post  question on Wed Oct 22, 2008 10:47 pm

ratio= (KE'-KE)/(sqrt(DeltaKE)^2+(DeltaKE')^2)
just plug in the numbers

question
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38+40

Post  hiyo on Wed Oct 22, 2008 11:12 pm

are the answers to questions 38 and 40 the same?

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Q#7

Post  00 on Thu Oct 23, 2008 12:32 am

what value of "t" do you use to calculate the velocity?

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#23

Post  physucks on Thu Oct 23, 2008 1:19 am

does anyone know how to do number 23...i know someone asked before but no help Crying or Very sad

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Question 32

Post  heidy on Thu Oct 23, 2008 12:10 pm

to find Deltav_i^2/v_i^2 just multiply Deltav/v by 2 the answer should be 0.0800

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33

Post  33 on Thu Oct 23, 2008 2:01 pm

how do u find delta KE' - why isnt it the same as delta KE?

33
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32

Post  32 on Thu Oct 23, 2008 2:23 pm

nvm i got it!

32
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delta ke prime 36

Post  36 on Thu Oct 23, 2008 2:24 pm

whats delta ke ' for 36? how do u compute it...i keep getting it wrong

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36

Post  36 on Thu Oct 23, 2008 2:25 pm

my bad i have delta Ke' i meant KE'

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36

Post  36 on Thu Oct 23, 2008 2:31 pm

nvm got it

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Re: Lab Report 5

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