Suppose That a Planetary Nebula Is 0

question 53

Multiple Choice

Suppose that a planetary nebula is 0.5 parsecs in diameter and expanding at 20 km/s.How old is it? (Hint: 1 pc = 3.1*10¹³ km.)

• A) 25,000 years
• B) 12,000 years
• C) 6,000 years
• D) 49,000 years
• E) 100,000 years

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Definitions:

Nominal Scale

A measurement scale used for categorization without a natural order or rank.

Numeric

Relating to, measurable in, or expressed as numbers or numerical data.

Nonnumeric

Pertaining to data that cannot be quantified or counted numerically, typically qualitative data.

Body Temperature

The measure of the body's warmth, typically averaged to about 37°C (98.6°F) in humans, but can vary based on various factors.