Question

An unknown positive point charge is placed at x = -0.36 m, y = 0 m, a charge of -4.8 micro-coulombs is placed at x = 0 m, y = -0.23 m, a charge of +2.4 micro-coulombs is placed at x = +0.37 m, y = -0.2 m, and charge of +4.8 micro-coulombs is placed at x = 0 m, y = +0.23 m. If the total electric field due to all four charges at the origin is 3.9 x 106 N/C (the x component of the total electric field is positive), what is value of the magnitude of the unknown charge in micro-coulombs? If negative, include a negative sign.

Answer #1

Two charges are placed on the y axis. One charge of +3.5
micro-coulombs is placed at y +3.9 m, and another charge of +10.7
micro-coulombs is placed at y = -4.8 m. If a third charge of -6
micro-coulombs is placed between them, where on the y axis (i.e. y
= ______) is the total for electric force on this charge equal to
zero? Answer in meters.

One unknown charge is located at the origin and another charge
of -6 micro-coulombs is located at x = + 0.3 m, y = 0 m. If at the
point x = 0, y = +0.4m, the total electric potential is +7.8 x
104 V, what is the unknown charge at the origin in
micro-coulombs? If negative, include a negative sign.

A charge is placed at x = 0 meters and another charge of 5
micro-coulombs is placed at x = +4.4 m (both on the x axis). The
total electric field produced by these two charges is zero at x =
+2.1 meters. Then the charge at x = 0 m, switches sign but its
magnitude is not changed. Where on the x axis (x = ____ m), is the
total electric field equal to zero now? Answer in meters.

Charge 1 of +3 micro-coulombs is placed at the origin, charge 2
of +21 micro-coulombs is placed at x = +0.31 m, y = -0.64 m, charge
3 of -3 micro-coulombs is placed at x = -0.27 m, y = 0 m. What is
the magnitude of the total electric force on charge 1 in
Newtons?

Charge 1 of +3 micro-coulombs is placed at the origin, charge 2
of +16 micro-coulombs is placed at x = +0.29 m, y = -0.56 m, charge
3 of -4 micro-coulombs is placed at x = -0.53 m, y = 0 m. Measured
counter-clockwise in degrees, what is the angle of the total
electric force vector on charge 1?

A positive charge, q1=2.20nC , is located at the origin (x=0
m,y=0 m). A negative charge,q2=−6.00nC, is located on the x-axis
at x=4 m,y=0 m). Calculate the magnitude of the electric field at
the location marked by the letter “X” on the figure below at (x=4
m,y=3 m).

A positive point charge q1 = 3.0 μC is located at x = 0, y =
0.30 m, a negative point charge q2 = -3.0 μC is located at x = 0, y
= -0.30 m. A third point charge Q = 4.0 μC is located at x = 0.40
m, y = 0.
A)What is the magnitude of the total electric force that charges
q1 and q2 exert on charge Q? Express your answer in newtons.
B)What is the...

At x=0.3 m, y=0, a 6 nC charge is placed. At x=0, y=0.1 m a -3
nC charge is placed. Find the electric potential at the origin.

A point charge q1 = -1.5 μC is placed at x = 0 and y = +5 cm. A
second point charge q2 = -6 μC is placed at x = +5 cm and y = 0.
Determine the magnitude of the net electric field at the origin and
the direction of the electric field as an angle measured from the
+x axis. Use k = 9.00 109 N·m2/C2.

a point charge of 5 micro coulombs is placed at the origin and a
second point charge of -3 micro coulombs is placed at x=0.370m.
where along the x axis can a third charge be placed so that the net
force on it is zero?
for this part I got 1.64m which was marked corrected
but the second part asks, what if both charges are positive?

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