Consider Two Stars of the Same Mass: Star 1 Has

question 93

Multiple Choice

Consider two stars of the same mass: star 1 has just moved on to the main sequence,and star 2 is about to leave it.How are these two stars different?

• A)Star 2 has more helium in its core and a hotter surface.
• B)Star 2 has more helium in its core and a cooler surface.
• C)Star 1 is more luminous and has a hotter surface.
• D)Star 1 is more luminous and has a cooler surface.

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Definitions:

Average Variable Costs

The total variable costs of production divided by the quantity of output produced, representing the cost of producing an additional unit.

Total Costs

The sum of all costs incurred in the production of goods or services, including both fixed and variable costs.

Cars

Motor vehicles with four wheels designed primarily for passenger transportation and commonly propelled by an internal combustion engine.

Perfectly Competitive

A market structure characterized by many buyers and sellers, homogenous products, and no barriers to entry or exit, leading to price takers rather than price makers.