You Observe a Distant Quasar in Which the Lyman Alpha

question 59

Essay

You observe a distant quasar in which the Lyman alpha line of hydrogen (rest wavelength = 121.6 nm)is found at a wavelength of 547.2 nm.When the light from this quasar was emitted,how large was the universe compared to its current size?

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Definitions:

Cash Flows

The gross flow of cash and assets equivalent to cash moving into and away from a business operation.

Payback Period

Payback period is the amount of time it takes for an investment to generate an amount of cash flow equal to the original investment amount.

Net Cash Inflows

The amount of cash that a business receives over a period, minus the amount of cash outflows.

Inventory Cost

Inventory cost includes the costs associated with purchasing, storing, and managing goods that a business intends to sell; it typically comprises the purchase price, warehousing costs, and any other expenses related to holding inventory.