Purchase Solution

Electron Properties: Distance, acceleration, collision, force, strength of electric field, point charge

Not what you're looking for?

Ask Custom Question

1) The average distance an electron travels between collisions is 2.0 um. What acceleration must an electron have to gain 2.0 * 10^{ - 18} J of kinetic energy in this distance?

2) What force must act on the electron to give it that acceleration?

3) What strength electric field N/C will exert this much force on an electron? This is the breakdown field strength.

4) Suppose a free electron in air is 1.0 cm away from a point charge. What minimum charge q_min nC must this point charge have to cause a breakdown of the air and create a spark?

Purchase this Solution
Solution Summary

With formulas and explanations, the solution to the problem is shown.

Solution Preview

The questions are in a wrong order. I shall correct this.

(2)
To gain kinetic energy T = 2x10^{ - 18} J over distance D = 2x10^{-6}m the force F must be such that

F*D = T

Therefore

F = T/D = 2x10^{ - 18} ...

Purchase this Solution
Free BrainMass Quizzes
Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

The Moon

Test your knowledge of moon phases and movement.

Basic Physics

This quiz will test your knowledge about basic Physics.

View More Free Quizzes
Related BrainMass Solutions

  • Current Electricity and Equivalent Resistance

    The acceleration of each electron is governed by the force acting on it (eE) and its mass (m). Thus, acceleration = Force/Mass = eE/m.

  • Thomson's Experiment and Charge to Mass Ratio

    Force in y-direction, Fy = eE (direction -ve y-axis, because, electron has -ve charge, therefore, experiences a force opposite to direction of the field).

  • Accelerated electron - Calculation of electric field

    The value of the field can be calculated from the force that the field exerts on the charge (This is the definition of the electric field). Remember that electric field and force are vector quantities.

  • electric field of a nucleus

    For a point charge, the magnitude of the electric field is obtained by Coulomb's law, (b) What are the direction and magnitude of the force exerted on an electron located at this distance?

  • Electricity and magentism questions.

    (answer) Since the electric field strength is given as 150N/C (150 Newton on 1 coulomb charge on the surface), we get, the force on an electron of charge e = 1.6 x 10^-19 Coulomb will be, F = 150 x 1.6 x 10^-19 = 240 x 10^-19 Newton ie, F

  • A charge in an electric field

    Therefore all we got to know about the electric field is what acceleration it causes the electron to have. For this we need to know the mass of the electron, m = 9.1x10^{-31}, and its electric charge, e = - 1.6x10^{-19}C.

  • Electron Speed and Acceleration in an Electric Field

    Force acting on the electron= Charge x Electric Field = q x E = 1.6x10-19 C x 332N/C = 5.312 x 10-17 N a) Now Force = mass x acceleration Therefore, Acceleration = Force/Mass of the Electron Or, Acceleration = F/m = 5.312 x 10-17/ (9.11x10-31 kg

  • Uniform electric field: point charge and potential difference

    The electric field E at distance r of a point charge q is: Therefore the potential due to this field at distance R from the charge is: Hence for the points B at distance RB from the charge and point A at distance RA from the charge we

  • change in electric potential energy

    The work which we must do in order to move the charge from A to B is minus the product of the electrostatic force on the charge due to the electric field and the distance that the charge moves in the direction of the force.

View More Related Solutions