- #1
Ba.Ala
- 3
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Please help me with this question, I am a complete physics newbie who is lost…
Alright.
The Question states:
The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges are fixed at each corner, as shown. The 400 mC charge experiences a net force due to the charge q A and qB. This net force points vertically downward in the drawing and has a magnitude of 405 N. Determine the magnitude and algebraic sighs of the charges qA and qB.

This is what I did:
(1) I know that centimeters are supposed to be converted to meters
2.00*10-6
(2) Two vectors A & B are added together to produce a third vector C = A + B .
(3) When the triangle formed is not a right triangle:
the magnitude of the vector sum can be found by using the Law of Cosines or the Law of Sines
meaning:
4.00*10-6
-----------------------
1
so now I am lost
HELP!
Alright.
The Question states:
The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges are fixed at each corner, as shown. The 400 mC charge experiences a net force due to the charge q A and qB. This net force points vertically downward in the drawing and has a magnitude of 405 N. Determine the magnitude and algebraic sighs of the charges qA and qB.

This is what I did:
(1) I know that centimeters are supposed to be converted to meters
2.00*10-6
(2) Two vectors A & B are added together to produce a third vector C = A + B .
(3) When the triangle formed is not a right triangle:
the magnitude of the vector sum can be found by using the Law of Cosines or the Law of Sines
meaning:
4.00*10-6
-----------------------
1
so now I am lost
HELP!