Physics

posted by .

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 × 109 N · m2/C2 and the elemental charge is 1.6 × 10−19 C.

Part 2. Calculate the gravitational force between these two electrons. The universal gravitational constant is 6.7 × 10−11 N · m2/kg2 and the mass of the electron is 9 × 10−31 kg.

  • Physics -

    Electric force:
    ke^2/R^2

    1. Use R = 0.0087 meters
    k = 9*10^9 N·m^2/C^2
    e = 1.6*10^-19 C
    ====================
    2. Gravitational force:
    G*m^2/R^2
    G = 6.7×10−^11 N·m^2/kg^2
    m = 9.1*10^31 kg
    Use same R as abOve

  • Physics -

    2.56e-21

  • Physics -

    1.9e-5

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. Electric forces

    An electron is released above the earth's surface. A second electron directly below it exers just enough of an electric force on the first electron to cancel the gravitational force on it. Find the distance between the two electrons. …
  3. Physics

    Two electrostatic point charges of +60.0 uC and +50.c uC exert a repulsive force on each other of 175 N. What is the distance between the two charges?
  4. phyics 2

    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 …
  5. physics

    Two electrostatic point charges of +54.0 ¦ÌC and +47.0 ¦ÌC exert a repulsive force on each other of 189 N. What is the distance between the two charges?
  6. pre ap physics

    A) A small cork with an excess charge of +9.0x10^-6 is placed 0.13 m from another cork, which carries a charge of −3.2x10^-6. What is the magnitude of the electric force between the corks?
  7. Physics

    Calculate the electric force between these two electrons. The value of the Coulomb constant 9 × 109 N · m2/C2 and the elemental charge is 1.6×10−19C. Answer in units of N (Newtons)
  8. physics

    A balloon rubbed against denim gains a charge of −5.0 µC. What is the electric force between the balloon and the denim when the two are separated by a distance of 3.0 cm?
  9. Physics

    Two electrostatic point charges of +60.0 μC and +57.0 μC exert a repulsive force on each other of 161 N. What is the distance between the two charges?
  10. physics

    In a thundercloud there may be an electric charge of 46 C near the top of the cloud and −46 C near the bottom of the cloud. If these charges are separated by about 6 km, what is the magnitude of the electric force between these …

More Similar Questions