Lab 10 Execution

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Lab 10 Execution

Post  dl on Mon Dec 08, 2008 8:03 pm

Does anyone know the answer to question 3 thanks.

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#3

Post  D on Mon Dec 08, 2008 8:18 pm

sqrt((Deltad/d)^2+(DeltaF/F)^2)*W

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Question7 on Maple TA

Post  A on Mon Dec 08, 2008 9:29 pm

Does anyone know how to calculate Value of DeltaQ(correct) and Value of DeltaQ(neglect mass error)?

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question 8

Post  Kathleen on Mon Dec 08, 2008 9:58 pm

Delta Q = sqrt((Deltam/m)^2+(DeltadeltaT/deltaT)^2)*Q

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Re: Lab 10 Execution

Post  Guest01 on Mon Dec 08, 2008 10:30 pm

Has anyone figured out Question 10?

Delta(W/Q) = __________________

Delta(W/Q) = sqrt((DeltaW/W)^2+(DeltaQ/Q)^2)*___

So what am I missing? Is it multiplied by something?

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Re: Lab 10 Execution

Post  Guest24 on Mon Dec 08, 2008 10:54 pm

For above you have to multiply your error by W/Q since they are asking for the absolute error. Your equation is right just multiply that by W/Q
aS asked for above I also need some help on finding Delta Q(correct) and Delta Q(neglecting mass)

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Re: Lab 10 Execution

Post  Guest01 on Mon Dec 08, 2008 11:10 pm

I tried that as well, Maple TA is marking it incorrect. At the end of my equation I add *(W/Q)

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#8

Post  D on Mon Dec 08, 2008 11:27 pm

Value of DeltaQ (correct) = sqrt((Deltam/m of water)^2+(DeltadeltaT/DeltaT)^2)*Q of water

Value of DeltaQ (neglect mass error) = sqrt((DeltadeltaT/DeltaT)^2)*Q of water

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#5 (confused)

Post  Z on Mon Dec 08, 2008 11:42 pm

sqrt((DeltaT_f)^2 + (DeltaT_i)^2)*deltaT .....what am i missing?

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Re: Lab 10 Execution

Post  question on Mon Dec 08, 2008 11:57 pm

what's the formula for question 5?

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#5

Post  D on Tue Dec 09, 2008 3:15 am

DeltadeltaT = sqrt((DeltaT_i)^2+(DeltaT_f)^2)

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question 10

Post  help1 on Tue Dec 09, 2008 2:14 pm

for question 10 i used sqrt((DeltaW/W)^2+(DeltaQ/Q)^2)*(W/Q) and it was correct

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question 8

Post  help1 on Tue Dec 09, 2008 2:21 pm

I'm stuck on the value of deltaQ(correct) and
Value of deltaQ(neglect mass error)

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units for specific heat

Post  physics on Tue Dec 09, 2008 2:30 pm

what are the units for specific heat?
i think its joules/ gram degrees c but im not sure how to enter it into maple ta for question 1
thanks

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Re: Lab 10 Execution

Post  tofu on Tue Dec 09, 2008 3:15 pm

The unit for specific heat should be cal/g/C or cal*g^-1*C^-1

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Re: Lab 10 Execution

Post  Guest01 on Tue Dec 09, 2008 4:17 pm

I tried Question 10 again this morning and got it correct. I must have misspelled something or forgot something. Thanks!

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Re: Lab 10 Execution

Post  question on Tue Dec 09, 2008 5:08 pm

what are the answers for the second part of questions 7

or how do you compute them?

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Question7 second part

Post  guest23 on Tue Dec 09, 2008 6:35 pm

for the Value of deltaQ(correct) i used sqrt((Deltam/m)^2+(DeltadeltaT/deltaT)^2)*Q
for deltadeltaT i used sqrt((DeltaT_i)^2+(DeltaT_f)^2) and for delta T i used Tf-Ti and for Q i added all the Q's

My answer is still coming up wrong. for m do i have to add all the masses together and use .2 for deltam?

What am i doing wrong?

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7

Post  7 on Tue Dec 09, 2008 11:02 pm

I am getting 7 wrong too

plz help

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#12

Post  guest98 on Tue Dec 09, 2008 11:20 pm

how do you do the ratio for #12?

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7

Post  Maria on Tue Dec 09, 2008 11:36 pm

how do u do the upper part on 7?????????

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Re: Lab 10 Execution

Post  Guest01 on Wed Dec 10, 2008 12:42 am

For Question 7 all it is asking for is the Q for each component. How do you find Q? [Hint: It's on the Preparation Lab 10 sheet. It's Question 2 and labeled as (2). It also tells you what each variable is supposed to represent].

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Question 7

Post  J on Wed Dec 10, 2008 12:48 am

Yea, Q is easy, what about the bottom part of question 7, regarding Delta Q correct, and neglected Mass Delta Q. I know the equation, which i got right on the next question. What I want to know is what to use for the M, Delta M

Is Delta T= 0.5

and T= (Tf-Ti)?

Thanks for any help

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Re: Lab 10 Execution

Post  Guest01 on Wed Dec 10, 2008 1:20 am

I believe DeltaT is another number you had to calculate using 0.5oC. I do think that is the correct value for T. I have lab on Wednesdays so I haven't done calculations yet.

Try them in MapleTA and see if they come up correct, if it doesn't try other values in the calculations.

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7

Post  m on Wed Dec 10, 2008 2:35 am

wat i am stuck on is finding delta T

is it same for all 4 things

and how do we find it

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Re: Lab 10 Execution

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