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To calculate the time it takes for an electromagnetic signal to travel from City A to City B, you can use the basic formula:

\[
\text{Time} = \frac{\text{Distance}}{\text{Speed of light}}
\]

Given that:
- The speed of light is approximately 186,282 miles per second.
- The distance between the two cities is 3,400 miles.

Now, let's plug these values into the formula:

\[
\text{Time} = \frac{3400}{186282}
\]

Let me calculate this for you.The time it will take for the electromagnetic signal to travel from City A to City B (approximately 3,400 miles) is about **0.0183 seconds**, rounded to four significant digits.

Would you like more details or have any questions?

Here are some related questions to explore further:
1. What would the time be if the distance was doubled to 6,800 miles?
2. How does the speed of light in a vacuum compare to the speed in fiber-optic cables?
3. What is the effect of atmospheric conditions on the speed of electromagnetic waves?
4. Can the speed of light change depending on the medium it travels through?
5. What other real-world applications rely on the speed of light for precise calculations?

**Tip:** Always check the number of significant digits needed when rounding in scientific calculations!

If an electromagnetic signal moves at the speed of light, about 186,282 miles per second, how long will it take this signal to travel from City A to City B, approximately 3,400 miles?

Learn how to calculate the time it takes for an electromagnetic signal to travel 3,400 miles at the speed of light, approximately 186,282 miles per second. This example demonstrates key physics concepts of speed and time, suitable for high school students in Grades 9-12.

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