A) The magnetic field in a cyclotron is 0.581 T. The dees have radius of 85.6. W

Question

A) The magnetic field in a cyclotron is 0.581 T. The dees have radius of 85.6. What maximum proton can a proton achieve in this cyclotron?

B) Crossed electric and magnetic fields are established over a certain region. The magnetic field is 0.900 T vertically downward. The electric field is 9.00 x 106 V/m horizontally east. An electron, traveling horizontally northward, experiences zero net force from these fields and so continues moving in a straight line. What is the electron's speed? ______m/s

Explanation / Answer

A)

In a cyclotron, poton is moving in a circular motion

m v^2 / r = B q v

v = B q r / m

= ( 0.581 T ) ( 1.6*10^-19 C ) ( 85.6 cm ) / ( 1.67*10^ -27 kg )

= 4.76*10^ 7 m/s

B)

The speed of electromagnetic wave is

v = E / B

= (9*10^ 6 V / m ) / ( 0.9 T )

= 1 * 10 ^ 7 m /s

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