1. The drawing shows a positive point charge +qi, a second point charge q2 that may be positive or negative, and a spot labeled P, all on the same straight line. The distance d between the two charges is the same as the distance between qi and the spot P. With q2 present, the magnitude of the net electric field at P is twice what it is when qi is present alone. Given that qi= 0.50 μC, determine q2 when it is (a) positive and (b) negative. 92 9A 2. The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges are fixed to each corner, as shown. The 4.00 µC charge experiences a net force due to the charges qa and qs. This net force points vertically downward and has a magnitude of 405 N. Determine the magnitudes and algebraic signs of the charges qa and qв. d 30.0⁰ +4.00 C 1 13 13 F cos 30.0° (a) F F sin 30.0° 9B 3. A total positive charge Q is placed on a solid conducting sphere with radius r. Find the electric field at any point (a) inside and (b) outside the sphere. Gaussian sphere

1. The drawing shows a positive point charge +qi, a second point charge q2 that may be positive or negative, and a spot labeled P, all on the same straight line. The distance d between the two charges is the same as the distance between qi and the spot P. With q2 present, the magnitude of the net electric field at P is twice what it is when qi is present alone. Given that qi= 0.50 μC, determine q2 when it is (a) positive and (b) negative. 92 9A 2. The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges are fixed to each corner, as shown. The 4.00 µC charge experiences a net force due to the charges qa and qs. This net force points vertically downward and has a magnitude of 405 N. Determine the magnitudes and algebraic signs of the charges qa and qв. d 30.0⁰ +4.00 C 1 13 13 F cos 30.0° (a) F F sin 30.0° 9B 3. A total positive charge Q is placed on a solid conducting sphere with radius r. Find the electric field at any point (a) inside and (b) outside the sphere. Gaussian sphere

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.

Question

1. The drawing shows a positive point charge +qi, a second point charge q2 that may be positive or
negative, and a spot labeled P, all on the same straight line. The distance d between the two charges
is the same as the distance between qi and the spot P. With q2 present, the magnitude of the net
electric field at P is twice what it is when qi is present alone. Given that qi=0.50 μC, determine q2
when it is (a) positive and (b) negative.
92
9A
2. The drawing shows an equilateral triangle, each side of which has a length of 2.00 cm. Point charges
are fixed to each corner, as shown. The 4.00 µC charge experiences a net force due to the charges qa
and qs. This net force points vertically downward and has a magnitude of 405 N. Determine the
magnitudes and algebraic signs of the charges qa and qв.
d
30.0⁰
+4.00 μC
All
11
F cos 30.0°
(a)
F
F sin 30.0°
9B
3. A total positive charge Q is placed on a solid conducting sphere with radius r. Find the electric
field at any point (a) inside and (b) outside the sphere.
Gaussian
sphere

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