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Physics 22 Online
GlockParrot69:

LAst physics question for the day. I promise! https://s18.postimg.org/54fc4s9o9/compression.png

GlockParrot69:

@sillybilly123

GlockParrot69:

please help me!! :)

Sam:

I have no idea why they gave the width of the magnetic field

1 attachment
GlockParrot69:

sam how did you get 0.6569 cm? this is what am getting. wait let me draw!! :)

GlockParrot69:

|dw:1520447656173:dw|

Sam:

You plugged in the wrong numbers, 'v' is the velocity of the electron, m/s, where 'B' is the magnetic force and has a unit T, tesla

GlockParrot69:

no im talking about at the very bottom when calculating the radius

Sam:

Check your calculator, \(m_e \times v^2=8.199\times 10^{-18}kgm^2/s^2\)

GlockParrot69:

oh i got it. i think i know where i made the mistake. Thanks sam. <3

GlockParrot69:

i forgot to square the 3.00X10^2 T

GlockParrot69:

so 9.11 X 9 does equal 81.99

GlockParrot69:

yeah thanks fam!!

Sam:

Sure thing :)

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