Which of These Was a Contribution of Newton to Astronomy

question 47

Multiple Choice

Which of these was a contribution of Newton to astronomy?

• A)Artificial satellites could be put into orbit about the Earth.
• B)The Sun's gravity is greatest on a planet at perihelion, so the planet must speed up.
• C)The Moon pulls as strongly on us as we do on it.
• D)His differential calculus lets us calculate planetary motions more accurately.
• E)All of these were due to Newton's work.

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Definitions:

Constant-Cost Industry

A constant-cost industry is an industry where the costs of production, including inputs, do not change as the industry's output changes.

Demand Shift

Occurs when the entire demand curve moves due to changes in factors other than the price of the good, such as consumer preferences or income.

Supply Increase

A situation where the quantity of a good or service that is available to consumers rises.

Increasing-Cost Industry

An increasing-cost industry is one in which costs of production increase as the industry expands, often due to factors like limited resources or higher input prices.