The H G Line Has a Wavelength of 434

question 33

Multiple Choice

The H g line has a wavelength of 434.0 nm when observed in the laboratory. If the H g line appears in a stars spectrum at 434.5 nm, what is the radial velocity of the star?

• A) 346 km/sec away from the observer.
• B) 346 km/sec toward the observer.
• C) 1.3*10⁸m/sec away from the observer.
• D) 1.3*10⁸ m/sec toward the observer.
• E) The radial velocity of the star can not be determined from this information.

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Definitions:

Marginal Cost

The variation in the overall expense that occurs as a result of increasing the production quantity by one unit.

Consumer Surplus

The benefit consumers receive when they pay less for a product than what they were prepared to pay, measured by the area beneath the demand curve and above the price.

Monopolist

An entity, often a single firm, that holds exclusive control over the supply of a particular good or service, setting prices without competition.

Marginal Cost

The increase in cost that arises from producing one additional unit of a good or service.