Exploding shoes

  • Thread starter flash525
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Near earth, the density of protons in the solar wind is 10.0cm^-3, and their speed is 691 km/s.
a) find current density of these protons
b) what current in amperes does earth recieve




a. To find the current density I need to multiply (nLA)e
then after i get I divide it by A


The Attempt at a Solution



To find the current density I need to multiply (nLA)e

do i need to convert 10.0 protons cm^-3 to 10000000m^-3 because i tried that and it didnt work????
I guess my main question is do i have the conversions right:
v= 691000 m/s
n = 1 E7
e= 1.6E-19
the final answer i got was 1.11 E-7 (is this answer maybe negative?)
 

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