- #1
LBRRIT2390
- 29
- 0
Homework Statement
What is the mass uncertainty, [tex]\delta[/tex]m = m+ - m, of the particle?
Homework Equations
m = [tex]\frac{R*|q|*B}{v}[/tex]
where
R = (6.4[tex]\pm[/tex]0.1) cm (convert to meters so 0.064[tex]\pm[/tex]0.001)
|q| = 1.6*10-19
B = (2.50[tex]\pm0.02[/tex]) T
v = (5.25[tex]\pm0.04[/tex])x107
The Attempt at a Solution
I figured out that m = m = 4.88*10-28kg
When I tried to find the upper limit I got 4.95x10-28
and the lower limit, 4.80x10-28
My professor's answer sheet says that m+ = 5.03 x 10-28 kg
and [tex]\delta[/tex]m = 0.2x10-28 kg.
First of all, I don't know how he determined that [tex]\delta[/tex]m = 0.2x10-28 kg. Can someone help me?
Second of all, if m = (4.88*10-28kg) and [tex]\delta[/tex]m = 0.2x10-28 kg then shouldn't m+ = 5.08 x 10-28 kg?? NOT 5.03 x 10-28 kg??