If Its Ion Engine Operates as Planned, Its Huge Solar

question 363

Multiple Choice

If its ion engine operates as planned, its huge solar panel remains deployed and undamaged, and its xenon energy source is not exhausted, then the Dawn spacecraft will reach both Vesta and Ceres (large asteroids in the belt between Mars and Jupiter) , and scientists will gather information about the formation of planets, whether Ceres has a buried ocean of fresh water, and whether vestiges of life lurk beneath its icy surface.

• A) Argument; conclusion: Its ion engine operates ... not exhausted.
• B) Argument; conclusion: The Dawn spacecraft ... Mars and Jupiter)
• C) Argument; conclusion: The Dawn spacecraft ... beneath its icy surface.
• D) Argument; conclusion: Scientists will gather information ... formation of planets.
• E) Nonargument.

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Definitions:

Volt-amperes

A unit of electrical power in an AC circuit equivalent to one volt multiplied by one ampere, used to measure apparent power.

VARs

An abbreviation for Volt-Ampere Reactive, a unit of reactive power in an electrical system, representing the non-working power in an AC circuit.

Watts

The unit of power in the International System of Units (SI), equivalent to one joule per second.

Peak-to-peak

The difference in voltage between the highest and lowest points in a waveform.