An object of charge q 1 = +1.2 C is traveling in the +x x^ direction with a spee

Question

An object of charge q1 = +1.2 C is traveling in the +x x^ direction with a speed of v= 1.5 m/s in a region of magnetic field B B= + 4.1 T z z^(out of the page).

1)

In what direction is the force on q1 due to the magnetic field?

Arrow A

Into the page

Out of the page

Arrow B

Arrow C

Arrow D

Arrow E

Arrow F

Arrow G

In the direction of v v

In the opposite direction of v v

2)

What is the magnitude of the force due to the magnetic field on the object?

F = 5.22 N

F = 4.92 N

F = 7.38 N

F = 0 N

3)

An object of charge q2=-2.1 C is traveling in the (+x+y)/2(+x+y)/2 direction with an unknown speed of v in a region of magnetic field B B = 5.1 T x x^. The object q2 feels a magnetic force of magnitude 6.13 N.

In what direction is the force on q2 due to the magnetic field?

Arrow A

Into the page

Out of the page

Arrow B

Arrow C

Arrow D

Arrow E

Arrow F

Arrow G

In the direction of v v

In the opposite direction of v v

4)

What is the magnitude of the velocity of q2?

|v| = 0.572 m/s

|v| = 4.13 m/s

|v| = 2.92 m/s

|v| = 0 m/s

|v| = 0.809 m/s

5)

An object of unknown charge is traveling with speed v in the y y^ direction and enters a region with constant magnetic field B B = -5.91 T z z^ (the field points into the page). The path the object takes after entering the field is shown below.

What is the sign of the charge q3?

Positive

Negative

q3 = 0

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Explanation / Answer

force F= q*(v x B)

v = 1.5 i

B = 4.1 k

Fb = 1.2*( 1.5 i x 4.1 k )

Fb = 1.2*1.5*4.1 -j

Fb = -7.38 j

down wards arrow <<<------answer

=============

2)

F = 7.83 N

================

3)

Fb = q*( v x B)

Into the page

(4)

Fb = q*v*B

Fb = 2.1*v*5.1

Fb = 6.13

6.13 = 10.71*v

v = 0.572 m/s

===========

5)

Negative

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