1.	Common static electricity involves charges ranging from nanocoulombs to microcoulombs.
a.	 How many electrons are needed to form a charge of –2.00nC

To determine how many electrons are needed to form a charge of \(-2.00 \, \text{nC}\), we can use the relationship between charge and the number of electrons.

The charge \( Q \) is related to the number of electrons \( n \) by the equation:
\[
Q = n \times e
\]
where:
- \( Q = -2.00 \, \text{nC} = -2.00 \times 10^{-9} \, \text{C} \)
- \( e \) is the elementary charge (the charge of a single electron), which is approximately \( -1.60 \times 10^{-19} \, \text{C} \).

To find the number of electrons \( n \), we rearrange the equation:
\[
n = \frac{Q}{e}
\]

Now, substituting the values:
\[
n = \frac{-2.00 \times 10^{-9} \, \text{C}}{-1.60 \times 10^{-19} \, \text{C}}
\]

\[
n = 1.25 \times 10^{10}
\]

Thus, \( 1.25 \times 10^{10} \) electrons are needed to form a charge of \(-2.00 \, \text{nC}\).

Would you like more details or have any other questions?

Here are 5 related questions:
1. How would the number of electrons change if the charge was \(-5.00 \, \text{nC}\)?
2. What is the total charge if you have \(5.00 \times 10^{10}\) electrons?
3. How does the elementary charge compare to other fundamental constants?
4. What are practical examples of charges in microcoulombs?
5. How is static electricity generated and why does it involve such small charges?

**Tip:** Remember, the sign of the charge indicates whether the particles are electrons (negative) or protons (positive).

Learn how to calculate the number of electrons required to form a charge of -2.00nC using Coulomb's law and the concept of elementary charge. Explore detailed steps and mathematical formulas involved. Suitable for advanced high school students and enthusiasts of physics and electrical concepts.

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