A Laser Emits a Pulse of Light That Lasts 10 $10 ^ { 27 }$

question 80

Multiple Choice

A laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each pulse has an energy of 480 mJ. How many photons are emitted in each pulse? (c = 3.0 × 10⁸ m/s, h = 6.626 × 10^-34 J ? s)

• A)1.7 × 10¹⁸
• B)2.1 × \(10 ^ { 27 }\)
• C)2.6 × \(10 ^ { 37 }\)
• D)3.1 × \(10^{43}\)

Explain the importance of encapsulation and compartmentalization in the origin of cellular life.

Understand the role and necessity of catalysts in the origin of life.

Interpret scientific evidence supporting the existence of ancient life forms.

Describe the structure and function of cell membranes.

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Definitions:

Raw Material Purchases

The acquisition of unprocessed materials that are required in the production or manufacturing of goods.

Selling And Administrative Expense

Costs incurred that are not directly tied to the production of goods or services, including sales personnel salaries and office expenses.

Accounts Payable

The amounts a company owes to suppliers or creditors for goods and services received but not yet paid for.

February

The second month of the year in the Gregorian calendar, commonly associated with the shortest month of 28 days, except in a leap year when it has 29 days.