In the Verification of the Hubble Law for the Expansion

question 82

Multiple Choice

In the verification of the Hubble law for the expansion of the universe and the determination of the constant H₀,the greatest difficulty has been:

• A) allowance for gravitational redshifting of light by high gravitational fields at distant galaxies.
• B) accurate determination of distances to very distant galaxies.
• C) measurement of recession velocities of distant galaxies by Doppler shift.
• D) the identification of distant objects as galaxies, rather than very bright, nearby stars.

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Definitions:

Depreciation

The process of allocating the cost of a tangible asset over its useful life, reflecting the decline in value over time.

Fixed Costs

Expenses that do not change in proportion to the activity of a business, such as rent, salaries, or insurance premiums.

Variable Costs

Costs that vary directly with the level of production or sales volume, such as materials and labor.

Fixed Costs

Costs that do not change with the amount of goods or services produced, such as rent, salaries, and insurance premiums.