The Speed of a Comet in an Elliptical Orbit About

question 50

Multiple Choice

The speed of a comet in an elliptical orbit about the sun:

• A)decreases while it is receding from the sun
• B)is constant
• C)is greatest when farthest from the sun
• D)varies sinusoidally with time
• E)equals L/(mr), where L is its angular momentum, m is its mass, and r is its distance from the sun

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Definitions:

Elasticity of Labor Supply

A measure of the response of labor supplied to a change in the price of labor.

Wages

Payments made to employees by employers, typically based on the number of hours worked or a fixed amount for a certain job.

Quantity of Labor

The total hours worked or the number of employees engaged in production within a certain period.

Unit Elastic

A situation where a change in price leads to an equal proportional change in the quantity demanded or supplied.