You will see all the 5 questions in the pictures You will see all the 5 questions in the pictures1. [-75 Points]
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SERPSE8 23.P.002.WI.
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2.
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(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. Silver has 47
electrons per atom, and its molar mass is 107.87 g/mol.
(b) Imagine adding electrons to the pin until the negative charge has the very large value 2.00 mc. How many electrons are
added for every 109 electrons already present?
2
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2. [-/5 Points]
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SERPSE8 23.P.005.
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2
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-12.5
-12.5
-75
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0/10
A 7.66 nC charge is located 1.83 m from a 3.78 nC point charge.
(a) Find the magnitude of the electrostatic force that one charge exerts on the other.
N
1
(b) Is the force attractive or repulsive?
attractive
repulsive
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3. [-15 Points]
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SERPSE8 23.P.006.
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-75
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0/10
0/10
0/10
(a) Find the magnitude of the electrostatic force between a Nation and a Clion separated by 0.30 nm.
N
1
(b) Would the answer change if the sodium ion were replaced by Lit and the chloride ion by Br-?
Yes
No
Explain.
4. [-75 Points]
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SERPSE8 23.P.008.
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=
Three point charges lie along a straight line as shown in the figure below, where 91 5.40 uc, 92 = 1.64 uc, and
93 = -1.84 uc. The separation distances are di = 3.00 cm and d2 2.00 cm. Calculate the magnitude and direction of the
net electric force on each of the charges.
=
91
93
92
+
di
d2
(a) 91
magnitude
N
direction
—Select—
(b) 92
magnitude
N
direction
—Select—
(c) 93
N
magnitude
direction
—Select—
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SERPSE8 23.P.009.
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Three point charges are arranged as shown in the figure below. (Take 91
=
6.60 nC, 92 = 4.90 nC, and 93
=
-3.27 nC.)
9,
0.300 m
9
0.100 m
93
(a) Find the magnitude of the electric force on the particle at the origin.
N
(b) Find the direction of the electric force on the particle at the origin.
° (counterclockwise from the +x-axis)
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