Explore BrainMass
Share

# Coulomb's Law

### 2 protons accelerated towards each other. Find max Electrical Force between them

Hello, The problem is stated as follows: Two protons are aimed directly toward each other by a cyclotron accelerator with speeds of 1500 km/s, measured relative to the earth. Find the maximum electrical force that these protons will exert on each other. Use 8.85*10^-12 F/m for the permitivity of free space, 1.60 *10^-19

### Relativistic Calculations in Electricity and Magnetism

See attachment for better formula representation and diagrams. 1. Across what potential difference does an electron have to be accelerated in order to reach the speed v = 9e7 m/s? Non-relativistically V Relativistically V When should you use relativistic calculations? 2. An electron entering Thomson's e/m appa

### Coulomb's Law - 2 small charged spheres

2 small spheres with mass m = 15.1 g are hung by silk threads of length L = 1.21 m from a common point. When the spheres are given equal charges, so that q_1 = q_2 = q, each thread hangs at an angle theta = 26 degrees from the vertical. Find the magnitude q. Use 9.81 m/s^2 as the acceleration due to gravity and 8.85 * 10^

### Mechanical Energy and Air Resistance

#1. Is it possible for one object to gain mechanical energy from another without touching it? Explain. #2. A ball is thrown straight upward on the Moon. Is the maximum height it reaches less than, equal to, or greater than the maximum height reached by a ball thrown upward on the Earth with the same initial speed (no air resi

### Electrostatics: Coulomb Force

Three identical charges +q and a fourth charge -q form a square of side a. a) Find the magnitude of the electric force on a charge Q placed at the center of the square. b) Describe the direction of this force.

### Electric fields, Gauss and Coulomb

1. A tiny ball (mass = 0.015 kg) carries a charge of -20 µC. What electric field (magnitude and direction) is needed to cause the ball to float above the ground? 2.At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 284 N/C. At a distance r2 from the charge, the field has a mag

### Electric field intensity due to an infinite plane of charges

Electric intensity due to an infinitely charged plane is charge density/2.permittivity and it is independent of distance .Explain.

### Coulomb's Law: Electrostatic Force and Charges

Two point charges, the first with a charge of +3.13 x 10^-6 C and the second with a charge of -4.47 x 10^-6 C, are separated by 25.5 cm. (a) Find the magnitude of the electrostatic force experienced by the positive charge. (b) Is the magnitude of the force experienced by the negative charge greater than, less than, or the same a

### Coulomb's Law: determining sign and magnitude

The attractive electrostatic force between the point charges +8.44 x 10^-6 C and Q has magnitude of 0.975 N when the separation between the charges is 1.31 m. Find the sign and magnitude of charge Q.

### Electric Potential/Equipotential

Please show all work and show all equations used and diagrams, etc. etc. so I understand completely please. 1) A metal sphere carries a charge 5*10^-9C and is at potential 0f 400V, relative to the potential far away. the potential at the center of the sphere is: 2) A 5cm radius isolated conducting sphere is charged so its

### Coulomb's Law: Force Between Two Points

The force between two point charges is given by F = (k(q_1)(q_2))/r^2 k = 9.0 * 10^9 * (N * M)/C^2 Using Coulomb's Law, What is the force, in billions of Newtons, rounded to the nearest whole number, between a pair of like charged particles if one particle is 2.0 Culomb and the second particle is 2.0 Culomb and they ar

### Motion of a Charged Particle Through a Magnetic Field

An ά-particle, with mass of the proton and charge q=2e is shot with speed 8 x 10^6 m/s at an angle of 25 degree to an x-directed magnetic field B = 0.20 T. Describe all aspects of the motion fully.

### Coulomb's Law and a Uniform Electric Field

At what angle will the electrons leave the uniform electric field at the end of the parallel plates (point P in Fig. 21-40)? Assume the plates are 5.4 cm long and E = 5.6 10^3 N/C. Ignore fringing of the field (counterclockwise from the x axis is positive).

### Coulomb's Law and Two Point Charges

Two point charges have a total charge of 590 uC. When placed 1.30 m apart, the force each exerts on the other is 22.8 N and is repulsive. What is the charge on each?

### Coulomb's Law: Charges in Equilibrium

Hi. Can someone please walk me through the following problem? Two point charge lie on the x axis. A charge of +9.9 micro-Coulombs is at the origin, and a charge of -5.1 micro-C is at x = 10.0 cm. a) At what position x would a third charge q3 be in equilibrium? b) Does your answer to part (a) depend on whether q3 is positi

### Charge and Coulombs Law

Please see attached diagrams for problem and question, thanks. +Q = fixed charge, +q = positive test charge, theta = angle, s = separation distance. No values are given in the question. Question: a) Rank these arrangements in order of magnitude of force experienced by the test charge. b) For arrangements F and G find the e

### Orbital Box Diagram and Notations

Compare the elements B, Al, C, and Si. a) Which has the most metallic character? b) Which has the largest atomic radius? c) Which has the most negative electron affinity? d) Place the three elements B, Al, and C in order of increasing first ionization energy. Using an orbital box diagram and the noble gas notation

### Step by step solution, answer is in meters/seconds

A uniform electric field has a magnitude of 2.1E3 Newtons/Coulombs. In a vacuum, a proton begins with a speed of 2.0E4 meters/seconds and moves in the direction of this field. Find the speed of the proton after it has moved a distance of 1.0mm.

### Magnitude of net force

Three positive particles of charges Q = 61.8 micro coulombs are located at the corners of an equilateral triangle with a side L = 16.3cm. Calculate the magnitude of the net force on each particle.

### Magnetic Field - In a circular region of radius r1 there is a uniform magnetic field coming out of the page and decreasing at a constant rate dB/dt = -K. A circular wire loop of radius r2 lies entirely outside the magnetic field region. In what direction does the conventional current I flow in the loop? What is the magnitude of I? Draw the induced (non-Coulomb) electric field in the loop. What is its magnitude?

In a circular region of radius r1 there is a uniform magnetic field coming out of the page and decreasing at a constant rate dB/dt = -K. A circular wire loop of radius r2 lies entirely outside the magnetic field region. In what direction does the conventional current I flow in the loop? What is the magnitude of I? Draw the induc

### Calculate net electric potentials due to 3 charges, ball w charge placed in field

See attached jpg file for question. Calculate net electric potentials due to 3 charges, ball w charge placed in field.

### Calculate net force on charge, net electric field, initial acceleration

See attached file. Calculate net force on charge, net electric field, initial acceleration, see attached jpg for question

### Magnetism is reinforced.

1. Why is a chunk of iron attracted to either pole of a magnet? What does this tell you about the reliability of attraction as a test of whether something is permanently magnetized or not? A classic puzzle involves two seemingly identical rods, one steel and magnetized (with poles at its ends), the other soft iron and not magnet

### Electrostatics: Forces

Problem 1. Determine the electric force acting on an electron placed in a uniform north-to-south E-field of 8.0 x 10^4 N/C in vacuum. 2. A +10-uC test-charge at some point beyond a charged sphere experiences an attractive force of 40 uN. Please coompute the value of the E-field of the sphere at that point in a vacuum. 3

### Bainbridge Mass Spectrometer

This problem has to do with the fact that one of Dalton's original Atomic Theory postulates was not true. 1) One gram equivalent weight of Lithium is 6.941 grams, according to chemical reaction analysis. What does this statement mean? If the valence of Lithium is known to be +1, what is the gram atomic weight of Lithium? So