An object of mass 5 × 10-6 g is placed over a thin positively charged sheet of surface density of charge σ = 4.0 × 10-6C/m2 (figure shown below). Estimate the charge that should be given to this object so that upon release it will not fall down. Calculate the number of electrons that is to be removed to give this charge. How much mass loss is caused by this removal of electrons?

Q: A small mass charged sphere ( q= 3 µC) is attached by an insulating string to the surface of a very…

A: Recall In equilibrium ∑Fx=0 FE=EqWhere E=σ/2ε0

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A: (a)The number of electrons removed from the penny is given by the equation, Substituting the…

Q: A 2.0 mili grams particle with electric charge of +80.0 µC orbits a charged wire, making 12000…

A: Given that: m=2 mili grams= 2×10-3 g =2×10-6 kgq=+80.0 μC=80.0×10-6 Cω=12000 rev/sec=12000×2π=24000π…

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Q: A spherical metallic object with a concentric hole inside initially holds a net charge of q1 = −3.84…

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Q: For the situation described in the previous question (Question 3), which of the following statements…

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Q: A raindrop with charge q = +4 × 10¬16 C is suspended in the air a few cm above a very large plane of…

A: Write the given values of this problem. q=+4×10-16 Cm=12 mg or 12×10-6 kgg=10 m/s2∈0=9×10-12 C2/N.m2

Q: A solid chunk of copper has a net charge of Q. If the conductor is in electrostatic equilibrium,…

A: electrostatic

Q: A conducting sphere has a net charge of – 1.28 × 10-16?. What is the approximate number of excess…

A: Solution Charge on one electron(e) = (-1.6*10^-19 C) Net charge (Q) = (-1.28*10^-16) Excess electron…

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A: Given. Q = 3uC. Surface charge density is 62.9 uC. Angle a = 30°. Concept force balancing

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A: Q = 50q r = 6 x 10-11 m

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Q: The surfaces of a lipid bi-layer forming the membrane around a cell with a radius of 1.2 µm has a…

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Q: Consider a system with three similar conducting spheres each with charge +q initially separated from…

A: Given data :- Three similar conducting spheres having charges - q1 = +q q2 = +q q3 = +q

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Q: A small mass charged sphere ( q= 3 µ C) is attached by an insulating string to the surface of a very…

A: each side of conductor has (sigma/2*epsilon0)

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Q: Two small spheres separated by a distance equal to 20.0 cm have equal charges. How many excess…

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Q: A small mass charged sphere (q= 3 µC ) is attached by an insulating string to the surface of a very…

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Q: Silicon wafers are made to create the most groundbreaking invention of mankind - microprocessors. If…

A: Given:- Two silicon wafers with the mass (M)= 125 gram…

Q: An electron is shot directly toward the center of a large metal plate that has surface charge…

A: Given : Surface charge density, σ = -2.0×10-6 C/m2            Initial kinetic energy of electron ,…

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Q: A small mass charged sphere (q= 3 Uc) is attached by an insulating string to the surface of a very…

A: The free-body diagram is

Q: A spherical metallic object with a hole inside initially bolds a net charge of = 250 nC. Then a…

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Q: A charged oil drop of mass m=8.00x104 kg is held floating (at rest) between two infinite plates. The…

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Q: A conducting sphere of radius 5.0 cm carries a net charge of 7.5 μC. What is the surface charge…

A: Calculating the surface charge density by formula : σ = Q / 4*π*r2

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Q: A 19.3 g mass is suspended 1.39 cm above a nonconducting flat plate, directly above an embedded…

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Q: In the figure below, a charged particle of mass m = 20 g and charge q = 0.250 mC is suspended in…

A: Consider the free-body diagram of the charged particle.

Q: Q.7 Two insulating, infinite flat plates are parallel and a distance d apart. The charge densities…

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Q: In the figure two tiny conducting balls of identical mass m and identical charge q 1. hang from…

A: Given data: The mass of particles is m=8.90 g=8.90x10-3 kg. The length of string L=37.40 in=0.95 m.…

Q: 7-) A conducting sphere, with an outer radius of 25 cm and an inner radius of 20 cm, has a surface…

A: Given data: The inner radius is ri=20 cm. The outer radius is ro=25 cm. The surface charge density…

Q: magnitude of the surface charge density on each plate

A: Given data: The surface charge density on each plate is: σ The distance between two plates is: d =…

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A: The initially-neutral, conducting, solid object diagrammed below contains two inner cavities. A…

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Q: 1. (1) What is the magnitude of the electric force of attraction between an iron nucleus (q = +26e)…

A: F = kq1q2/r2    = 26ke2/r2    = 26×9×109×(1.6×10-19)2/(1.5×10-12)2    = 2.66 × 10-3 N

Q: A conducting sphere of radius 0.01 m has a charge of 1 nC deposited in it. The magnitude of the…

A: SOlution: given that r = 0.01 m q = 1 nC to find hte E electric field inside the sphere

Q: Suppose a speck of dust in an electrostatic precipitator has 8.0000 × 10" protons in it and has a…

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Q: A metal sphere has a net charge of -3.0 C. How many excess electrons must be on the sphere? (e-…

A: Given the excess charge on the sphere Q = -3C  Charge of one electron is given by e= -1.6 ×10-¹⁹C

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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.