# Lab 10 Execution

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## Lab 10 Execution

Does anyone know the answer to question 3 thanks.

dl
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D
Guest

## Question7 on Maple TA

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

A
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Kathleen
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## Re: Lab 10 Execution

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?

Guest01

Posts : 133
Join date : 2008-09-19

## Re: Lab 10 Execution

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)

Guest24
Guest

## Re: Lab 10 Execution

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

Guest01

Posts : 133
Join date : 2008-09-19

## #8

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

D
Guest

## #5 (confused)

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

Z
Guest

## Re: Lab 10 Execution

what's the formula for question 5?

question
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D
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## question 10

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

help1
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## question 8

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

help1
Guest

## units for specific heat

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

physics
Guest

## Re: Lab 10 Execution

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

tofu
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## Re: Lab 10 Execution

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

Guest01

Posts : 133
Join date : 2008-09-19

## Re: Lab 10 Execution

what are the answers for the second part of questions 7

or how do you compute them?

question
Guest

## Question7 second part

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?

guest23
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## 7

I am getting 7 wrong too

plz help

7
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## #12

how do you do the ratio for #12?

guest98
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## 7

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

Maria
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## Re: Lab 10 Execution

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].

Guest01

Posts : 133
Join date : 2008-09-19

## Question 7

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

J
Guest

## Re: Lab 10 Execution

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.

Guest01

Posts : 133
Join date : 2008-09-19

## 7

wat i am stuck on is finding delta T

is it same for all 4 things

and how do we find it

m
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