A 1.20T magnetic field points northeast. Part A Find the magnitude of the force

Question

A 1.20T magnetic field points northeast.

Part A

Find the magnitude of the force on a +0.30C charge that is moving 12m/s toward the north.

Part B

Find the direction of the force on a +0.30C charge that is moving 12m/s toward the north.

Part C

Find the magnitude of the force on a +0.30C charge that is moving 12m/s toward the east.

Part D

Find the direction of the force on a +0.30C charge that is moving 12m/s toward the east.

Part E

Find the magnitude of the force on a +0.30C charge that is moving 12m/s toward the south.

Part F

Find the direction of the force on a +0.30C charge that is moving 12m/s toward the south.

Part G

Find the magnitude of the force on a +0.30C charge that is moving 12m/s toward the west.

Part H

Find the direction of the force on a +0.30C charge that is moving 12m/s toward the west.

Part I

Find the magnitude of the force on a +0.30C charge that is moving 12m/s toward the southwest.

*on the direction of the force questions is either up or down

Explanation / Answer

x = east i

y = north j

Bx = B*cos45 = 1.2*cos45 = 0.85

By = B*sin45 = 1.2*cos45 = 0.85

A) Fb = q*vy*Bx = 0.3*12*0.85= 3.06 N

B) j cross i = -k = down

C) Fb = q*vx*By = 0.3*12*0.85= 3.06 N

D) i cross j = k = up

E) Fb = q*-vy*Bx = 0.3*12*0.85= 3.06 N

F) -j cross i = k = up

H)Fb = q*-vx*By = 0.3*12*0.85 = 3.06 N

F) -i cross j = -k = down

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