An electrostatic paint sprayer has a 0.150 m diameter metal sphere at a potential of 10.0 kV that repels paint droplets onto a grounded object. (a) What charge (in C) is on the sphere?   (b) What charge (in C) must a 0.150 mg drop of paint have to arrive at the object with a speed of 10.0 m/s?

Q: Multiple-Concept Example 4 deals with the concepts that are important in this problem. As…

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Q: potential difference

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A: Use the relation between electric field and electric potential, and solve as:

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A: a) Write the expression for the potential difference and substitute the required values.

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A: Solution: As per the given data,   Here, The charge is negative since it has excess electrons.

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A: The diameter of the disk: The distance between the disks: The charge of the disks:

Q: A particle with charge 8.75 x 10-13 C moves a distance d = 0.30 m in a straight line between points…

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Q: A -10mC charge is placed in an Electric Field that is directed vertically downward and its magnitude…

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Q: A uniform electric field of magnitude 250. V/m is directed in the positive xdirection. A 12.0-μC…

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Q: electron mass, assume that the proton remains at rest. By calculating the work done on the electron…

A: Initial speed of electron (vi) = 295000 msFinal speed of electron (v) = 3×295000= 885000 ms

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Q: Calculate the change in the kinetic energy Δ?,ΔK, potential energy Δ?,ΔU, and total energy Δ?ΔE of…

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Q: 9. Charged particles of dust drift into a region where there is a uniform electric field. One of the…

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Q: A metal ball with a radius of R = 5.0 cm is charged with a charge of Q = 10 nC.  Draw a ray from the…

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Q: An electrostatic paint sprayer has a 0.100 m diameter metal sphere at a potential of 15.0 kV that…

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Q: An eletrostatic paint sprayer consists of a charged metal sphere. Charged paint droplets (the sign…

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Q: A 25 x 10-6 C point charge is held at rest within a uniform electric field in the +x direction…

A: charge (q) = 25×10-6C surface charge density (σ) = 5.55×10-10Cm2

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.