An electric field of 2.09 kV/m and a magnetic field of 0.358 T act on a moving electron to produce no net force. If the fields are perpendicular to each other, what is the electron's speed?

The velocity is  

Explanation:

From the question we are told that

   The electric field is

    The magnetic field is  

Generally the force experienced by the electron due to the magnetic field is

Generally the force experienced by the electron due to the electric  field is

Since from the question the net force is zero  then

=>    

Substituting values

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2