Physics

posted by .

A small plastic ball with a mass of 6.50x10^-3 kg and with a charge of +0.150x10^-6 C is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, whit the tread making an angle of 30 degrees with respect to the vertical. The area of each plate is 0.0150 m^2. What is the magnitude of the charge of each plate?

  • Physics -

    Are the capacitor plates horizontal or vertical or aligned tih the thread? How is the thread prevented from interfering with the capacitor plates?

  • Physics -

    They Are Vertical with the ball in between them.

  • Physics -

    dr wls is here now so there is hope.

  • Physics -

    Force down = m g = 6.5*10^-3 *9.8 = 53.7*10^-3 N
    Force sideways = q E
    where E = sigma/eo
    so force sideways = q sigma/eo
    then
    tan 30 = (q sigma /eo)/53.7*10^-3
    you know q, eo
    so solve for sigma
    charge = sigma * plate area

  • Physics -

    what does sigma represent?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A small plastic ball with a mass of 6.50x10^-3 kg and with a charge of +0.150x10^-6 C is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, whit the tread making an angle of …
  2. Physics

    A small plastic ball with a mass of 6.50x10^-3 kg and with a charge of +0.150x10^-6 C is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, whit the tread making an angle of …
  3. physics

    A small plastic ball with a mass of 6.50x10^-3 kg and with a charge of +0.150x10^-6 C is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, whit the tread making an angle of …
  4. coll physics II

    A small plastic ball of mass 6.10 10^3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor. The ball is in equilibrium, with the thread making an angle of 30.0° with respect …
  5. physics im stuck

    A small plastic ball of mass 6.10 10^-3 kg and charge +0.150 µC?
  6. Physics

    A small plastic ball of mass 6.30 10-3 kg and charge +0.150 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° …
  7. physics

    A small plastic ball with a mass of 7.00 10-3 kg and with a charge of +0.162 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making …
  8. physics

    A small plastic ball with a mass of 7.00 10-3 kg and with a charge of +0.162 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making …
  9. Physics

    A small plastic ball with a mass of 6.80 10-3 kg and with a charge of +0.161 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making …
  10. Physics

    A small plastic ball with a mass of 6.80 10-3 kg and with a charge of +0.161 µC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making …

More Similar Questions