If a Sunspot Has a Temperature of 4,500 K and the Surrounding

question 61

Multiple Choice

If a sunspot has a temperature of 4,500 K and the surrounding solar surface has a temperature of 5,800 K, how many times brighter is the surface compared to the sunspot

• A)0.28
• B)0.36
• C)2.8
• D)3.6
• E)36

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Definitions:

IRR Method

The Internal Rate of Return method, a capital budgeting technique used to evaluate and compare the profitability of investments or projects.

Hurdle Rate

The minimum rate of return on an investment required by a manager or investor.

Capital-Budgeting

The process that a company undergoes to evaluate potential major projects or investments, such as new machinery or expansion plans.

Risk-Free Rate

The expected yield from an investment that carries no risk of losing money, often shown through the interest rates of government securities.