A Planetary Nebula Has a Radius of 0

question 29

Multiple Choice

A planetary nebula has a radius of 0.5 pc and is expanding at 20 km/sec. What is the approximate age of this planetary nebula? (1 pc is equal to 3*10¹³km and 1 year is equal to 3.15*10⁷seconds.)

• A) 240 years
• B) 790,000 years
• C) 96,000 years
• D) 960 years
• E) 24,000 years

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Definitions:

Cross Hedging

A risk management strategy that involves hedging a position in one asset by taking a position in another asset with correlated price movements.

Risk Management

The process of identifying, analyzing, and taking steps to reduce or manage uncertainties and risks to an organization's capital and earnings.

Put Option

An economic arrangement empowering the bearer with the right, albeit without the obligation, to sell a defined amount of a principal asset at a determined price within a set duration.

Call

An option contract that gives the holder the right, but not the obligation, to buy a specified amount of an underlying asset at a specified price within a specified time.