how do i go about answering thiss question?

particles with a mass of 7.96x10^-27 and have a (+2e)are accelerated by a voltage and kept in a magnetic field. at one stage the ion starts ar 1x10^6 m/s and exits at 2.75x10^6 m/s. immediatleyt after theey enter a magnetic feild and fallow a radius of 1.24m

the voltage in the accelerating chamber is?

2 answers

What does this have to do with physics diploma?

How do you go about the question.

Take a look at your text:
Coulomb force=Eq=V/d * q
but force=mass*acceleration=mass(Vf-Vi)/time where time = distance/avgvelocity
What is avgvelocity: (Vi+Vf)/2

Solve for voltage.

There are no questions on the magnetic deflection encountered after entering the magnetic field.
a question from the old diploma