In this problem, we will find the value of resistance from the expression of voltage across a charged capacitor, which is expressed as:

$\overline{){\mathbf{V}}{\mathbf{=}}{{\mathbf{V}}}_{{\mathbf{0}}}{\mathbf{(}}{\mathbf{1}}{\mathbf{-}}{{\mathbf{e}}}^{\mathbf{-}\frac{\mathbf{t}}{\mathbf{R}\mathbf{C}}}{\mathbf{)}}}$

The voltage, V = 0.732V_{0}

We get time taken by the heart pacemaker to fire once as:

t = 1min/69 = 60s/69 = 0.8696 s

A heart pacemaker fires exactly 69 times a minute, each time a 29.0 nF capacitor is charged (by a battery in series with a resistor) to 0.732 of its full voltage. What is the value of the resistance?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the !! Resistor-Capacitor Circuits concept. If you need more !! Resistor-Capacitor Circuits practice, you can also practice !! Resistor-Capacitor Circuits practice problems.

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Based on our data, we think this problem is relevant for Professor Shao's class at SJSU.