Common static electricity involves charges ranging from nanocoulombs to microcoulombs. (a) how many electrons are needed to form a charge of –2.00nc (b) how many electrons must be removed from a neutral object to leave a net charge of 0.500µc ?

In the first case there are 1.25 × 10^10 electrons in the second case, there are 3.1  × 10^12  electrons.

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Static electricity is usually composed of electric charges of very small magnitude such as nanocoulombs to microcoulombs.

For question (a)

Q = ne

Q= magnitude of electric charge

n = number of electrons

e = magnitude of electronic charge

2 × 10^-9 C = n1.6 × 10^-19C

n = 2 × 10^-9 C/1.6 × 10^-19C

n = 1.25 × 10^10 electrons

For question (b)

0.5  × 10^-6 = n1.6 × 10^-19C

n = 0.5  × 10^-6/1.6 × 10^-19C

n = 3.1  × 10^12  electrons

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battery with hi vtge high val resist in series

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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