What Do We Mean by the Star-Gas-Star Cycle

question 19

Multiple Choice

What do we mean by the star-gas-star cycle?

• A)It is the idea that stars in close binary systems can exchange gas with one another.
• B)It is the set of nuclear reactions by which heavy elements are produced in the cores of massive stars.
• C)It describes the orbits of the stars and interstellar medium around the center of the galaxy.
• D)It is the continuous recycling of gas in the galactic disk between stars and the interstellar medium.

---

Definitions:

Required Rate

Often referred to the required rate of return, it is the minimum expected rate of return on an investment deemed acceptable to an investor.

Payback Period

The duration of time it takes for an investment to generate an amount of income or cash flow equal to the cost of the investment.

Salvage Value

The estimated residual value of an asset at the end of its useful life.

Old Equipment

Refers to machinery or technology that has become outdated or has surpassed its effective service life but may still be in use.