In: Physics
a) What is the speed of a beam of electrons that go undeflected when passing through crossed electric and magnetic fields of magnitude 1.39x104 V/m and 2.92x10-3 T, respectively? Give your answer to 3 sf.
b) Protons move in a circle of radius 5.2 cm in a 0.502 T magnetic field. What value of electric field could make their paths straight? Give your answer to 3 sf.
c) The beam of electrons goes undeflected when passing through crossed electric and magnetic fields of magnitude 1.37x104 V/m and 2.92x10-3 T, respectively. What is the radius of the electron orbit, in mm, if the electric field is turned off? Give your answer to 2 sf.