What value of magnetic field would make a beam of electrons, traveling test at a

Question

What value of magnetic field would make a beam of electrons, traveling test at a speed of 4.0 times 10^8 m/s_1 go undeflected through a region where there is a uniform electric field of 4.0 times 10^4 pointing North? 1.00 times 10^2 T You are correct. Computer answer now shown above. Your receipt is 154-3328 That is the direction of the magnetic field assuming it is not pointing East? Incorrect: North Incorrect: Out of the page Incorrect: South correct: Into the Page Incorrect: West You are correct. Computer's answer now shown above. Your receipt is 154-7789 That is the angular frequency of the circular orbit if the electric field is turned off?

Explanation / Answer

w( angular frequency) = qB/m = ( 1.6 x 10^-19 )( 1x 10^ -2) / ( 9.11 x 10^-31) = 0.1756 x 10^ 10 =

w= 1.756 x 10^ 9 rad/ sec

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