Some Quasars Vary in Brightness in Only a Few Days

question 9

Multiple Choice

Some quasars vary in brightness in only a few days.What does this tell us about the quasars?

• A)They have large magnetic fields
• B)They are quite small
• C)They must be highly luminous
• D)They cannot emit radio waves

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Definitions:

Quantity Supplied

The supply of goods or services that vendors are prepared and capable of offering at an established price over a specified duration.

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a given price in a specific time period.

Clear The Market

This is a term used in economics to describe a scenario where the quantity supplied matches the quantity demanded, meaning the market is in equilibrium and there are no surplus or shortage.

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a given price level in a specified time period.