Please answer this question with explanations so I can understand. In a Millikan experiment, two horizontal plates are 2.5 cm apart. A sphere of latex, whose mass is 1.5 X 10-15kg , remains motionless when the difference of potential between the plates is 460 Volts. a) What is the magnitude of the charge on the surface of the latex sphere? b) How many excess or deficient electrons are there on the surface of the sphere?

Please answer this question with explanations so I can understand. In a Millikan experiment, two horizontal plates are 2.5 cm apart. A sphere of latex, whose mass is 1.5 X 10-15kg , remains motionless when the difference of potential between the plates is 460 Volts. a) What is the magnitude of the charge on the surface of the latex sphere? b) How many excess or deficient electrons are there on the surface of the sphere?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter23: Electric Forces

Section: Chapter Questions

Problem 15PQ: A charge of 36.3 nC is transferred to a neutral copper ball of radius 4.35 cm. The ball is not...

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A charge of 36.3 nC is transferred to a neutral copper ball of radius 4.35 cm. The ball is not grounded. The excess electrons spread uniformly on the surface of the ball. What is the number density (number of electrons per unit surface area) of excess electrons on the surface of the ball?
Two parallel plates are separated ?=0.00375 mx=0.00375 m and have a potential difference of ?=1610 V.V=1610 V. A small ball with mass ?=9.10×10−12 kgm=9.10×10−12 kg is placed between the two plates and remains motionless and floating between the plates. From the overall charge on the ball, determine the number of electrons ?ene the ball has gained or lost. The acceleration due to gravity is ?=9.81 m/s2,g=9.81 m/s2, and the elementary unit of charge is ?=1.60×10−19 C.
A particle with a charge of -2.00nC and a mass of 0.25 kg is released from a negative plate towards a positive plate. The plates are separated by a 3cm gap. The electric field of the plates if 8x10^6 N/C. Calculate the speed of the charge before the particle hits the positive plate (ignore gravity).
In the Millikan oil-drop experiment illustrated in the figure below, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates. Some of the droplets pick up one or more excess electrons. The charge on the plates is adjusted so that the electric force on the excess electrons exactly balances the weight of the droplet. The idea is to look for a droplet that has the smallest electric force and assume it has only one excess electron. Suppose we are using an electric field of 3.45 x 104 N/C. The charge on one electron is 1.60 x 10-19 C. Calculate the radius of an oil drop of density 832 kg/m3 for which its weight could be balanced by the electric force of this field on one electron. Oil droplets Pinhole Telescope with scale in eyepiece Light um
In the Millikan oil-drop experiment illustrated in the figure below, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates. Some of the droplets pick up one or more excess electrons. The charge on the plates is adjusted so that the electric force on the excess electrons exactly balances the weight of the droplet. The idea is to look for a droplet that has the smallest electric force and assume it has only one excess electron. Suppose we are using an electric field of 4.10 x 104 N/C. The charge on one electron is 1.60 x 10-19 C. Calculate the radius of an oil drop of density 786 kg/m³ for which its weight could be balanced by the electric force of this field on one electron. Oil droplets um Telescope with scale in eyepiece Pinhole Light O
In the Millikan oil-drop experiment illustrated in the figure below, an atomizer (a sprayer with a fine nozzle) is used to introduce many tiny droplets of oil between two oppositely charged parallel metal plates. Some of the droplets pick up one or more excess electrons. The charge on the plates is adjusted so that the electric force on the excess electrons exactly balances the weight of the droplet. The idea is to look for a droplet that has the smallest electric force and assume it has only one excess electron. Suppose we are using an electric field of 7.40 ✕ 104 N/C. The charge on one electron is 1.60 ✕ 10−19 C. Calculate the radius of an oil drop of density 888 kg/m3 for which its weight could be balanced by the electric force of this field on one electron.
Complete the following statements: After some rather exhausting counting (and a rather tall tale), a physics teacher determines that a very small sample of an object contains ... a. ... 8.25749 x 1017 protons and 5.26 x 1014 electrons; the charge on this object is ____ Coulombs. b. ... 3.12 x 1014 protons and 4.5488 x 1016 electrons; the charge on this object is ____ Coulombs. c. ... 2.40277 x 1019 protons and 9.88 x 1016 electrons; the charge on this object is ____ Coulombs. d. ... 2.6325 x 1015 protons and 2.6325 x 1015 electrons; the charge on this object is ____ Coulombs.
How much work is required to set up the four-charge configuration of the figure if q = 3.59 pC, a = 74.0 cm, and the particles are initially infinitely far apart and at rest? +1 -9 +q
An electron is shot directly toward the center of a large metal plate that has surface charge density -2.0* 10-6 C/m2. If the initial kinetic energy of the electron is 1.60 *10-17 J and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?
Question 1 a) In J. J. Thomson experiment (1897), an electron moving horizontally with a constant speed vo enters in between the horizontal plates of a capacitor. The electric field strength between the plates of length L and distance d, is E. The vertical deviation of the electron at the moment of exit from the field region is measured to be Y. Derive the expression giving the electron's charge to mass ratio, i.e. e/m to be 2v,Y/CEL). (Recall that Thomson received Nobel Prize for his achievement.) b) Calculate e/m, knowing the following data. E=1.6x10* Newton/Coulomb, L=10 cm, Y=2.9 cm, v=2.19x10* km/s. (Be careful to use coherent units.)
An electrostatic dust precipitator that is installed in a factory smokestack includes a straight metal wire of length L = 0.8 m that is charged approximately uniformly with a total charge Q=0.5x107 C. A speck of coal dust (which is mostly carbon) is near the wire, far from both ends of the wire; the distance from the wire to the speck is d= 1.2 cm. Carbon has an atomic mass of 12 (6 protons and 6 neutrons in the nucleus). A careful measurement of the polarizability of a carbon atom gives the value a = 1.96 x 10-40 (C. m)/(N/C). (a) Calculate the initial acceleration of the speck of coal dust, neglecting gravity. Your answer must be expressed in terms of Q. L, d. and a. You can use other quantities in your calculations, but your final result must not include them. It is convenient to use the "binomial expansion" that you may have learned in calculus, that (1+ef 1+neife 1. Note that can be negative. (Enter the magnitude. Use the following as necessary: Q. L, d. a, co, and m for the mass…
Shown in the figure below is a "classical model" (i.e. before we knew about quantum mechanics) of an atom. Here an electron (m = 9.109e-31 kg, q = -1.602e-19 Coulombs) is orbiting a nucleus in uniform circular motion. The nucleus has charge Q = 1.2816e-18 Coulombs and the radius of the electron orbit is a = 7.7e-11 meters. Q a Submit Answer Charge = q Mass = m Determine the magnitude of the electric force applied to the electron: [F] = Determine the velocity of the orbit: v = meters/second NOTE: Assume that the gravity force can be neglected. Newtons