Monday
January 26, 2015

Homework Help: Physics

Posted by Anonymous on Monday, January 30, 2012 at 9:18pm.

After rubbing a balloon against someone's hair, a balloon has accumulated a static electric charge. The air inside the balloon has the same density as the air outside of the balloon, and the balloon itself
weighs 1.41mN. How many free electrons are there on the surface of the balloon if an electric field of magnitude 4.97x10^11N/C is required to keep the balloon floating at a constant height?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - Hot air balloons float in the air because of the difference in density...
Physics - A hot-air balloon is accelerating upward under the influence of two ...
Physics - A hot-air balloon is accelerating upward under the influence of two ...
Physics - A hot air balloon of radius 12 meters has been heated so that the air ...
physics help 2 please! - The air inside a hot air balloon has an average ...
chemistry - hot-air balloon is filled with air at a volume of 3.64 x 10^3 m^3 at...
physics - The air inside a hot air balloon has an average temperature of 71.7 C...
physics - a hot air balloon rise above the ground, accelerating upwards at a ...
Chemistry - The total mass that can be lifted by a balloon is given by the ...
Chemistry - The total mass that can be lifted by a balloon is given by the ...

Members