In Fizeau's Experiment for Measuring the Speed of Light, the Wheel

question 14

Multiple Choice

In Fizeau's experiment for measuring the speed of light, the wheel has 475 notches. What rotational speed is required for the return beam of light to pass through the next notch? The time between successive notches is 6.65 × 10^-5 s.

• A) 20.4 rev/sec
• B) 16.6 rev/sec
• C) 31.7 rev/sec
• D) 66.4 rev/sec
• E) 90.9 rev/sec

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Definitions:

Price/earnings Ratio

The Price/Earnings Ratio (P/E Ratio) is a valuation metric that compares the current share price of a company to its per-share earnings, used by investors to evaluate the investment attractiveness of a company.

Excess Cash

Refers to the amount of cash a company holds that is beyond what it requires for day-to-day operations and investments.

Dividend

The distribution of a portion of a company's earnings, decided by the board of directors, to a class of its shareholders. Dividends can be issued as cash payments, as shares of stock, or other property.

Share Repurchase

A company's buyback of its own shares from the marketplace, reducing the number of outstanding shares and potentially increasing share value.