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A negative charge of q = -3.1 × 10-17C and m = 2.9 × 10-26 kg enters a magnetic field B = 0.65 T with initial velocity v = 110 m/s, as shown in the figure. The magnetic field points into the screen.
a. Express the magnitude of the magnetic force, F, in terms of q, v, and B.
F=
b. Express the centripetal acceleration of the particle in terms of the force F and the mass m.
a=
c. Express the radius, R, of the circular motion in terms of the centripetal acceleration a and the speed v.
R=
d. Which direction will the magnetic force be on the charge?
| Downward. | To the left. | Into the screen. | Out of the screen. |
| To the right. | Upward. |
e. Under such a magnetic force, which kind of motion will the charge undergo?
|
f. Calculate the magnitude of the force F, in newtons.
F=
g. Calculate the magnitude of a, in meters per square second.
a=
h. Calculate the numerical value of the radius R, in meters.
R=
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