phyics 2

posted by .

Remarks The gravitational force between the charged constituents of the atom is negligible compared with the electric force between them. The electric force is so strong, however, that any net charge on an object quickly attracts nearby opposite charges, neutralizing the object. As a result, gravity plays a greater role in the mechanics of moving objects in everyday life.

Question If the distance between two charges is doubled, by what factor is the magnitude of the electric force changed?
1 .
Examine the dependence of the electrical force in Coulomb's law on the distance r between the two charges. If r is doubled, how does that affect the value of the force? .PRACTICE IT .Use the worked example above to help you solve this problem. The electron and proton of a hydrogen atom are separated by a distance of about 5.87 10-11 m at some instant.
(a) Find the magnitudes of the electric force and the gravitational force that each particle exerts on the other, and the ratio of the electric force, Fe, to the gravitational force, Fg. Fe = 2 N
Fg = 3 N
Fe/Fg = 4

(b) Compute the acceleration caused by the electric force of the proton on the electron. Repeat for the gravitational acceleration. ae = 5 m/s2
ag = 6 m/s2
.EXERCISE HINTS: GETTING STARTED | I'M STUCK! .(a) Find the magnitude of the electric force between two protons separated by 1 femtometer (10−15 m), approximately the distance between two protons in the nucleus of a helium atom.
7 N

(b) If the protons were not held together by the strong nuclear force, what would be their initial acceleration due to the electric force between them?
8 . m/s2 .

  • phyics 2 -

    Object A attracts object B with a gravitational force of 10 newtons from a given distance. If the distance between the two objects is doubled, what is the changed force of attraction between them?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. SCIENCE - Pls HELP

    A proton (with a mass, mp = 1.673 x 10^-27 kg & electrical charge, e = 1.602 x 10^-19) and an electron (with a mass, me = 9.109 x 10^-31 kg & electric charge -e = -1.602 x 10^-19) are not moving & at a distance of 1.000 x 10^-10 m …
  2. physics

    Force F has units of kg m/s2 . The electric force between an object of charge Q and a second object of charge q separated by a distance r is given by F= k Qq/ r2 , where k is a constant. In order to determine the charge of q, the electric …
  3. physics

    1.) A small sphere of charge 2.4 μC experience a force of 0.36 N when a second sphere of unknown charge is placed 5.5 cm from it. What is the charge of the second sphere?
  4. phYSICS

    the process of charging a conductor by bringing it near another charged object and then grounding the conductor is called... a) charging by contact b) induction c) charging by polarization d) neutralization which one of the following …
  5. College Physics

    A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -2.1 x 10-9 C is acted on by a downward electrostatic force of 4.3 x 10-6 N when placed in this field. (a) What is the magnitude …
  6. Physics electric force, please help!

    A charge of +Q and a charge of +2Q are separated by a distance r. The electric force of +2Q on +Q has a magnitude of F and is directed to the right. Which one of the following statements is correct regarding the electric force of +Q …
  7. PHYSICS

    1. Why is an electric field considered to be a vector quantity?
  8. Physics

    Assume that in interstellar space the distance between two electrons is about 0.87 cm. The electric force between them are repulsive. Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × …
  9. Science- Electric and Magnetic Potential Energy

    1. At which position will the bar magnets most likely experience the least magnetic potential energy between them?
  10. Analytical Physics II

    A charged cloud system produces an electric field in the air near Earth's surface. A particle of charge -2.1 x 10-9 C is acted on by a downward electrostatic force of 4.3 x 10-6 N when placed in this field. (a) What is the magnitude …

More Similar Questions