- #1
Wh1994
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Homework Statement
Hi, I did a lab for a high school physics class where we measured the mass of an electron using a solenoid and our working equation was this:
m = qB2R2/2V
I was able to do the lab and get good results, but I have discussion questions I don't know how to answer. I can't figure it out. Here are the questions:
Would it be possible to use the Earth's magnetic field to deflect the beam? How large a tube would you need? Assuming the Earth had no magnetic field, would it be practical to determine the mass of an electron by accelerating it horizontally through a known potential difference and subsequently observing its deflection in the Earth's gravitational field?
Homework Equations
e/m ratio?
The Attempt at a Solution
I spent about 2 hours last night trying to think about this problem... I can't figure it out