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A proton moves at 8.00 x 106 m/s along the x-axis. It enters a region in which there is a magnetic
field of magnitude 2.50 T,...
(Solved)
A proton moves at 8.00 x 106 m/s along the x-axis. It enters a region in which there is a magnetic
field of magnitude 2.50 T, directed at an angle of 60.0° with the x-axis and lying in the xy - plane
(Fig. 4.3). Find the initial magnitude and direction of the magnetic force on the proton.
Date posted:
May 12, 2021
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Answers (1)
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A charge q1 = 2.00 µC is located at the origin, and a charge q2 = -6.00 µC is located at (0, 3.00)
m, as shown...
(Solved)
A charge q1 = 2.00 μC is located at the origin, and a charge q2 = -6.00 μC is located at (0, 3.00)
m, as shown in figure a.

(a) Find the total electric potential due to these charges at the point P, whose coordinates are
(4.00, 0) m.
(b) Find the change in potential energy of a 3.00 μC charge as it moves from infinity to point P
of (Fig a) such that the situation is as in Fig b.
Date posted:
May 11, 2021
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Answers (1)
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A rod of length l has a uniform positive charge per unit length ? and a total charge Q. Calculate the electric field at a...
(Solved)
A rod of length l has a uniform positive charge per unit length λ and a total charge Q. Calculate the electric field at a point P that is located along the long axis of the rod and a distance a from one end.

Date posted:
May 11, 2021
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Answers (1)
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A charge q1 = 7.0 µC is located at the origin, and a second charge q2 = -5.0µC is located on the x
axis, 0.30 m...
(Solved)
A charge q1 = 7.0 μC is located at the origin, and a second charge q2 = -5.0μC is located on the x
axis, 0.30 m from the origin. Find the electric field at the point P, which has coordinates (0, 0.40) m.

Date posted:
May 11, 2021
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Answers (1)
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Three point charges lie along the x axis as shown in figure 2.2. The positive charge q1 =15.0µC is
at x = 2.00 m, the positive...
(Solved)
Three point charges lie along the x axis as shown in figure 2.2. The positive charge q1 =15.0μC is
at x = 2.00 m, the positive charge q2 = 6.00 μC is at the origin, and the resultant force acting on
q3 is zero. What is the x coordinate of q3?
Date posted:
May 11, 2021
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Answers (1)
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Consider three point charges located at the corners of a right triangle as shown in figure 2.1, where q1= q3 = 5.0 µC, q2 =...
(Solved)
Consider three point charges located at the corners of a right triangle as shown in figure 2.1, where q1= q3 = 5.0 μC, q2 = -2.0 μC and a = 0.10 m. Find the resultant force exerted on q3.

Date posted:
May 11, 2021
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Answers (1)
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How much charge is represented by 4,600 electrons?
(Solved)
How much charge is represented by 4,600 electrons?
Date posted:
May 11, 2021
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Answers (1)
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Find the currents l1, l2, and l3 in the circuit shown in figure below.
(Solved)
Find the currents l1, l2, and l3 in the circuit shown in figure below.

Date posted:
May 11, 2021
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Answers (1)
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A cell of unknown emf E and internal resistance 2 O is connected to a 5 O resistance. If the terminal p.d V is 1.0...
(Solved)
A cell of unknown emf E and internal resistance 2 Ω is connected to a 5 Ω resistance. If the terminal p.d V is 1.0 V, calculate E.
Date posted:
May 11, 2021
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Answers (1)
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Four resistors are connected as shown in figure below.
(a) Find the equivalent resistance between points a and c.
(b) What is the current in each resistor...
(Solved)
Four resistors are connected as shown in figure below.

(a) Find the equivalent resistance between points a and c.
(b) What is the current in each resistor if a potential difference of 42 V is maintained between a and c ?
Date posted:
May 11, 2021
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Answers (1)