The Intensity of Solar Radiation on Earth Is About 1

question 25

Multiple Choice

The intensity of solar radiation on Earth is about 1.4 × 10³ W/m². How many 50-W lightbulbs would you have to arrange in an array 3 m from you in order to obtain the same intensity as the Sun?

• A) 8.0 × 10²
• B) 5.3 × 10²
• C) 3.2 × 10³
• D) 1.0 × 10⁷
• E) 1.6 × 10³

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Definitions:

Diversification

The strategy of allocating investments among various financial assets or sectors to reduce risk.

Portfolio

A collection of financial investments like stocks, bonds, commodities, cash, and cash equivalents, including mutual funds and ETFs.

Utility Function

A mathematical representation that ranks individuals' preferences for various combinations of goods and services, aiming to measure happiness or satisfaction.

Efficient Markets Hypothesis

The theory that asset prices fully reflect all available information, making it impossible to consistently achieve higher returns than the overall market through stock picking or market timing.