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Phys 261 Final Exam Questions And Answers Rated A+. $10.39
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Phys 261 Final Exam Questions And Answers Rated A+.
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(Exp 1)A cell in an Excel spreadsheet contains $A$5. What does it mean? - Answer The cell is fixed (Exp 1)Which type of chart in EXCEL will actually plot the point at its Cartesian coordinates? - Answer scatter chart (Exp 1)What is the Solver used for? (pick the best answer) - Answer ...

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  • February 8, 2025
  • 11
  • 2024/2025
  • Exam (elaborations)
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  • a cell in an excel spreadsheet

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Phys 261 Final Exam Questions And
Answers Rated A+.
(Exp 1)A cell in an Excel spreadsheet contains $A$5. What does it mean? - Answer The cell is fixed



(Exp 1)Which type of chart in EXCEL will actually plot the point at its Cartesian coordinates? - Answer
scatter chart



(Exp 1)What is the Solver used for? (pick the best answer) - Answer minimizing or maximizing a cell by
varying other cells



(Exp 1)To run a macro in EXCEL, you may need to first click on.....? - Answer the view tab and then click
on the macro button.



(Exp 1)Before the lab template will let you exit from EXCEL, according to step 21, you must... - Answer
1) enter your name in the designated area of the spreadsheet

2) enter your section number in the designated area of the spreadsheet

3) save the file using the gray save button in the body of the spreadsheet



(Exp 2)"1/3" rule to determine the uncertainty ∆x - Answer Error is 1/3 of the smallest unit

(Ex: ruler in mm, error=1/3mm)



(Exp 2)estimate - Answer sum of values/# of values



(Exp 2)The smallest increment the scale can display is 0.1 g and thus the uncertainty ∆M in a
measurement of mass would be about - Answer 0.033 g



(Exp 2)Using the ruler, and without using the vernier calipers, estimate how precisely you can measure
the length of one of the sides of one of the blocks. - Answer To the nearest mm with an error of 1/3mm

, (Exp 2)Volume error - Answer ∆V =V*sqrt((∆c/c)^2 + (∆b/b)^2 + (∆a/a)^2)



(Exp 2)Density error - Answer ∆ ρ =ρ sqrt((∆V/V)^2 + (∆M/M)^2)



(Exp 2)Mean error - Answer ∆〈x〉=∆x/sqrt(N)



(Exp 2)χ2 - Answer =∑((xi-xtheory)/∆xi)^2



(Exp 2)Determining if values are consistent - Answer are within 2 error bars from the accepted value



(Exp 2)Density consistent value - Answer measured and accepted density should differ by no more than
twice the uncertainty.



(Exp 2)"two-sigma rule" - Answer if your data point is no more than two error bars from the accepted
value then the disagreement is not significant



(Exp 2)reduced χ2 should equal (blank) for good fit - Answer 1



(Exp 2)reduced χ2 eqn - Answer χ2/v



(Exp 2)Degrees of freedom (v) - Answer N-α (where N is the number of measurements and α is the
number of fitting parameters used to find the theoretical value from the data)



standard deviation - Answer



propagation of errors equation - Answer ∆f=sqrt(sum((df/dx)*∆x)^2))



(Exp 3)tilt angle of the air-track - Answer theta= invsin(added height/length of track)



(Exp 3)position of cart vs time - Answer x=0.5gsing(theta)*t^2*v0*t+x0

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