An Artificial Earth Satellite Is Moved from a Circular Orbit

question 60

Multiple Choice

An artificial Earth satellite is moved from a circular orbit with radius R to a circular orbit with radius 2R.During this move:

• A)the gravitational force does positive work, the kinetic energy of the satellite increases, and the potential energy of the Earth-satellite system increases
• B)the gravitational force does positive work, the kinetic energy of the satellite increases, and the potential energy of the Earth-satellite system decreases
• C)the gravitational force does positive work, the kinetic energy of the satellite decreases, and the potential energy of the Earth-satellite system increases
• D)the gravitational force does negative work, the kinetic energy of the satellite system increases, and the potential energy of the Earth-satellite system decreases
• E)the gravitational force does negative work, the kinetic energy of the satellite decreases, and the potential energy of the Earth-satellite system increases

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Definitions:

Prime Rate

The interest rate that commercial banks charge their most credit-worthy customers, often used as a reference rate for various loans.

Revolving Credit

A credit facility that allows a company or individual to borrow up to a pre-approved limit, pay it back, and borrow again.

Commitment Fee

A fee charged by a lender to a borrower for an unused credit line or undisbursed loan.

Commercial Paper

An unsecured, short-term debt instrument issued by corporations to finance their immediate operating expenses, inventory, and other short-term liabilities.