What Is a White Dwarf

question 54

Multiple Choice

What is a white dwarf?

• A) The remains of a star that ran out of fuel for nuclear fusion
• B) A main sequence star of spectral type F, which tends to look white in color
• C) It is a type of star that produces energy by gravitational contraction.
• D) It is a star that follows a period-luminosity relation.

---

Definitions:

Flighting Schedules

Flighting schedules are advertising strategies that involve alternating periods of heavy advertisements with periods of no advertising, used to optimize impact while controlling costs.

Snowboards

A type of equipment used for snowboarding, consisting of a board to which the rider's feet are attached with bindings, allowing them to slide down snow-covered slopes.

Buyer Turnover

The rate at which new customers purchase from a business while existing customers leave or stop purchasing.

Repeat Purchases

Occurs when customers buy a product or service again, typically an indicator of customer satisfaction and loyalty.