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**[SOLVED] [101] Magnetic field strength in fN**

**1. Homework Statement**

You have arranged that the magnetic field in a particular region of space is due North with a value of 0.01 T. An electron enters the field traveling to the West with a speed of 0.05 of the speed of light. As a result, the electron experiences a magnetic force which is upwards.

(a) What is the strength of this magnetic force, in fN? (NOTE: The "f" stands for "femto", which is 10-15.)

(b) What is the amount of the resulting acceleration of the electron? (NOTE: Get the mass of an electron from the inside back cover of your textbook.)

**2. Homework Equations**

B=.01T

B=2ki/c^2r

F=ma

**3. The Attempt at a Solution**

B will be very strait forward once I have answered a. I already know the strength of the magnetic force (B) in Tesla. So, it seems that I just need to convert tesla to femto newtons. Can someone lead me in the right direction?

I am not very familiar with this concept.

Thank you SO much!