Refer to the Figure

question 15

Multiple Choice

Refer to the figure. A Type I Cepheid has been located in an open cluster. The period of the Cepheid variable is 30 days and the variables apparent visual magnitude m is 10. First, use 12-1 to estimate the absolute visual magnitude, M . Calculate the distance to this open cluster? Hint: d_pc = 10^{(m - M + 5) /5} using a scientific calculator.

• A) 100 pc
• B) 10,000 pc
• C) 20 pc
• D) 300 pc
• E) 2500 pc

---

Definitions:

Measurable

Describes something that can be quantified or assessed using specific criteria or units of measure.

Feasibility Report

An analysis and evaluation of a proposed project to determine if it is technically, financially, and legally viable.

Venture Capitalists

Investors who provide capital to startup companies and small businesses with long-term growth potential in exchange for equity.

Informal Style

A writing or speaking style that is more relaxed, personal, and conversational, as opposed to formal.