Question: The flash unit on a camera operates by storing charge on a capacitor and releasing it suddenly when the flash is set off. The following

The flash unit on a camera operates by storing charge on a capacitor and releasing it suddenly when the flash is set off.
The following data describe the charge Q remaining on the capacitor (measured in micro coulombs, Î¼C) at time (measured in seconds).

(a) Use a graphing calculator or computer to find an exponential model for the charge.
(b) The derivative Q'(t) represents the electric current (measured in microamperes, Î¼A) flowing from the capacitor to the flash bulb. Use part (a) to estimate the current when t = 0.04 s. Compare with the result of Example 2 in Section 2.1.

t0.00 0.02 0.04 0.06 0.08 0.10 Q 100.00 81.87 67.0354.88 44.93 36.76

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