Magnetism and Eletrocmagnetism Hwk-Fairly easy

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Homework Help Overview

The problem involves calculating the force experienced by an electron moving perpendicular to a magnetic field, specifically focusing on the parameters of velocity and magnetic field strength. The context is within the subject area of magnetism and electromagnetism.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the calculation of force using the formula F=qvB and question the correctness of the original poster's result. There is also exploration of the implications of the electron's negative charge on the calculations and the potential impact of significant figures on the answer.

Discussion Status

The discussion is ongoing, with participants providing guidance on potential issues such as unit considerations and the importance of significant figures. There is no explicit consensus on the correct answer, but various interpretations and suggestions are being explored.

Contextual Notes

Participants note that the original poster is limited by the number of attempts allowed in their homework system, which adds pressure to resolve the issue accurately. There is also mention of the need to calculate acceleration once the force is correctly determined.

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Homework Statement


An electron has a velocity of 2.00x10^6 m/s perpendicular to a magnetic field of 3.3T. What force does the electron experience?


Homework Equations





The Attempt at a Solution



F=qvB

q=1.6x10^-19 (the charge of an electron)
V=2.00x10^6
B=3.3

so..(1.6x10^-19)(2.00x10^6)(3.3)
=1.056e-12? it was wrong..
 
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You left off the units. The answer you got is in Newtons. Did the question ask for different units perhaps?
 
the answer it wants is in Newtons
 
An electron has a velocity of 2.00 106 m/s perpendicular to a magnetic field of 3.3 T. What force does the electron experience?

1.06e+-12 N
(an in the electronic hwk they said it was wrong)

What acceleration does the electron experience?
m/s2
 
Oh, wait, you found the force, but the acceleration must yet be calculate using F=ma!
 
the problem is...

the answer that i have for the Force is NOT CORRECT. without that, I can't get the force.my math is right, right? but somehow the internet keeps saying its the wrong answer. This for an electronic hwk so it tells me if the answer is wrong or right. but i only have a certain numbe of tries.
 
Maybe it's negative? q should be negative since the charge of an electron is negative.
 
ok, since i ran out of tries trying to calculate for the forces.

lets find acceleration using the electron as a negative.
 
what did you get?
 
  • #10
Are you using webassign? Because it's sensitive to significant figures. If you have too many or too little they might mark you wrong. I didn't see anything wrong with your calculation besides that.
 

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