- #1
iRaid
- 559
- 8
I have 2 problems that I'm wondering if they're right or not... Thanks for the help.
10) What is the area, and its approximate uncertainty, of a circle of radius 3.8 x 104cm?
A=πr2
A=π380002
A=4536459792cm2
Then, I did the same thing with 37999 (the uncertainty is [tex]\pm[/tex] 1) to find the difference in the area to be 238758.
[tex]238758/4536459792[/tex] x 100% = .0053% uncertainty.
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11) What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r=2.86[tex]\pm[/tex]0.09m?
A=[tex]4/3[/tex]πr3
A=[tex]4/3[/tex]π2.863
A=97.99m3
I then did the same thing with 2.77 to get that area to be 89.03m3.
97.99-89.03=8.96
[tex]8.96/97.99[/tex]x100%=9% uncertainty.
Homework Statement
10) What is the area, and its approximate uncertainty, of a circle of radius 3.8 x 104cm?
Homework Equations
A=πr2
The Attempt at a Solution
A=π380002
A=4536459792cm2
Then, I did the same thing with 37999 (the uncertainty is [tex]\pm[/tex] 1) to find the difference in the area to be 238758.
[tex]238758/4536459792[/tex] x 100% = .0053% uncertainty.
_______________________________________________________________
Homework Statement
11) What, roughly, is the percent uncertainty in the volume of a spherical beach ball whose radius is r=2.86[tex]\pm[/tex]0.09m?
Homework Equations
A=[tex]4/3[/tex]πr3
The Attempt at a Solution
A=[tex]4/3[/tex]π2.863
A=97.99m3
I then did the same thing with 2.77 to get that area to be 89.03m3.
97.99-89.03=8.96
[tex]8.96/97.99[/tex]x100%=9% uncertainty.