Thursday
October 23, 2014

Homework Help: Physics

Posted by jenish on Thursday, March 6, 2008 at 7:54pm.

The Earth has an electric field with magnitude roughly 100 N/C at its surface.
A) Assuming there is a point charge at the earth's center creating this field, how much charge does the earth posses? Treat the earth as a sphere of radius 6.37 * 10^6 m.
B)As the earth orbits the sun,this charge moves and therefore creates a magnetic field. If we assume the earth moves on a circle ( whihc is approximately true) we can use the eqn for a current loop, B =(miu)I/2R, to find the magnetic field created by the earth( by the way, this is completely unrelated to the earth's North and south magnetic poles!) but first, find the current created by the earth as ut circles the sun.
HINT: I= Q/(delta)t. Think of a cross section of the earth' orbit. How often does a charge pass through it?
C) Using the earth sun distance , R= 1.5 * 10^11 m, calculate the magnetic field created by earth as it circles the sun.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Physics - The Earth is surrounded by an electric field on its surface that ...
Physics - The Earth is surrounded by an electric field on its surface that ...
physic - During fair weather, an electric field of about 100 N/C points ...
Physics-Totally lost - I'm totally lost on this one- the earth is surrounded by ...
Physics-Please help! - I don't want someone to do this for me-I'm just totally ...
Physics - At the heighest point on earth, the distance to the center of the ...
physics - Assuming the Earth's magnetic field averages about 0.5010−4 T ...
physics - A large conducting plate of area equal to 4.0 m^2 has an evenly ...
physics - A large conducting plate of area equal to 4.0 m^2 has an evenly ...
physics - The auroral zone is defined by the last field line from the Earth that...

Search
Members