A Satellite Is Held in Orbit by a 2 000-N

question 35

Multiple Choice

A satellite is held in orbit by a 2 000-N gravitational force.Each time the satellite completes an orbit of circumference 80 000 km,the work done on it by gravity is:

• A)1.6 ´ 10⁸ J.
• B)1.6 ´ 10¹¹ J.
• C)6.4 ´ 10¹¹ J.
• D)0.

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Definitions:

Long-Run Equilibrium

A state in economics where all factors of production and costs are variable, leading to a situation where firms are earning normal profits and no new firms enter or exit the industry.

Plaster

A building material used for coating, protecting, and decorating walls and ceilings, made from lime, sand, and water.

Labor

The involvement of human physical exertion and cognitive efforts in the manufacture of goods and services.

Interest Rate

The percentage charged on borrowed money or paid on invested capital, representing the cost of borrowing or the gain on investing.