Electromagnetic fields and force

AI Thread Summary
The discussion revolves around calculating the force on a proton using the equation F=q(E+v*B). Participants highlight difficulties in applying the equation correctly, particularly regarding the directions of the electric field (E) and magnetic field (B). There is emphasis on ensuring the correct interpretation of the vector nature of the equation, especially the cross product involved. Clarification is sought on whether the forces from B and E act in opposite directions. Understanding the vector components and their directions is crucial for solving the problem accurately.
dtesselstrom
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Homework Statement


What is the magnitude of the force on the proton in the figure? View Figure

Homework Equations


F=q(E+v*B)

The Attempt at a Solution


Ive tried just putting the numbers into that equation provided and it doesn't work so I am guessing there is some more that I am missing. I've also tried subtracting the two because B and E are in opposite directions but this also didn't work.
 

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You just need that equation. Make sure that you get the directions af the forces right. Are you sure that the force resulting from B and the force form E are in opposite directions?
 
\vec{F}=q(\vec{E}+\vec{v}\times\vec{B})

Speaking of directions, this equation is a vector equation and the x is a cross product.
 

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