If you wish to take a picture of a bullet traveling at 500 m/s, then a very brief flash of light produced by an RC discharge through a flash tube can limit blurring. Assuming 1.00 mm of motion during one RC constant is acceptable, and given that the flash is driven by a 600-μF capacitor, what is the resistance in the flash tube?

Explanation:

The given data is as follows.

       Speed of the bullet (v) = 500 m/s

     Distance during one RC time constant (d) = 1 mm =

      Capacitance (C) = 600 =

Hence, formula for speed of the bullet is as follows.

                v =

or,           t =

Time constant for RC circuit is as follows.

          t = RC

        R =

            =

            =

            =

Thus, we can conclude that resistance in the flash tube is .

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )