How Much Time Does It Take a Beam of Light

question 56

Multiple Choice

How much time does it take a beam of light to travel 2.9 km through space? (c = 3.0 × 10⁸ m/s)

• A)9.7 s
• B)9.7 ms
• C)9.7 μs
• D)9.7 ns
• E)9.7 ps

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Definitions:

Discount Rate

The interest rate used to discount future cash flows to their present value, often used in the valuation of investments.

Time Periods

Distinct intervals of time within which certain activities or events occur or are completed.

Simple Interest

Simple interest is a method of calculating the interest charge on a loan based on the original principal balance without compounding.

Rate of Return

The financial improvement or decline in an investment across a particular period, indicated as a percentage of the investment’s entry cost.