(d) What is the magnitude of the centripetal force of the electron? Fc = N (d) Write a symbolic expression for the radius of the electron's circular path then calculate its numeric value. r= m
(d) What is the magnitude of the centripetal force of the electron? Fc = N (d) Write a symbolic expression for the radius of the electron's circular path then calculate its numeric value. r= m
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Transcribed Image Text:An electron with mass, m = 9.11 x 10-³1 kg, is moving at speed, v = 74 x 105 m/s,
perpendicular to the Earth's magnetic field where its strength is B = 1.71 x 10-6 T.
SYMBOLIC INPUT. Use the given variables, m, v, and B, along with the fundamental charge, e (as needed).
(1 of 3) Magnetic Force
(a) Write a symbolic expression for the size of the magnetic force on the moving electron then calculate its numeric value.
FB = evB
evB✔✔
= 2.02e-18
(b) The magnetic force on the electron acts perpendicular
O it will affect the electron's speed but not its direction
it will affect the electron's direction but not its speed
O it will not affect the speed or direction of the electron
2.03e-18 N✔✔
r =
(c) The electron will therefore follow a circular circular path.
perpendicular✔✔ to the electron's velocity so ... ✔
(2 of 3) Centripetal Motion
(d) What is the magnitude of the centripetal force of the electron?
F₁ =
N
(d) Write a symbolic expression for the radius of the electron's circular path then calculate its numeric value.
m
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