The beam of electrons goes undeflected when passing through crossed electric and magnetic fields of magnitude 1.37x104 v/m and 2.89x10-3 t, respectively. what is the radius of the electron orbit, in mm, if the electric field is turned off?

The correct answer for this question is this one: "92.95"

We know that
Math Processing Error]

V = square root (PR)

P here would be the 1.2 Watts
R would be the 7200 ohm (notice the conversion from 7.2k ohm)

V = square root [ (1.2)(7200) ]
V = 92.95

Hope this helps answer your question and have a nice day ahead.

Ifound this on google “the middle ear contains three tiny bones known as the ossicles: malleus, incus, and stapes. the ossicles were given their latin names for their distinctive shapes; they are also referred to as the hammer, anvil, and stirrup, respectively.” i hope this you for what your looking for