Can someone help with these questions?
1 answer:
One
Givens
v = 8.5 km/s = 8500 m/s R = 25 cm = 0.25 m B = 5.29 * 10^-3 q = 1.6*10^-19 m = ?? Formula
m*v^2/ R = qvB Cancel 1 v on each side.
m*v / R = q*B
which for m when transposed is
m = q*B*R/v
m = 1.6*10^-19 * 5.29*10^-3 * 0.25 / 8500
m = 2.49 * 10^-26
Answer: A
Two
Givens
B = 0.5 T q = 1.6 * 10^ -19 v = ?? m = 3.34 * 10^-27 R = 55.6 cm = 0.556 m Formula
qvB = mv^2/R Cancel one of the "v"s
qB = mv/R
qBR / m = v
Solution
1.6*10^-19 * 0.5 T * 0.556 m / 3.34 * 10^-27
13317365 = v
1.33 * 10^7 = v
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