What Is the Energy of a Mole of Photons with a Frequency

question 79

Multiple Choice

What is the energy of a mole of photons with a frequency of 9.1 * 10¹⁵ Hz?

• A) 3.6 * 10^-5J/mol
• B) 3.6 * 10⁶J/mol
• C) 2.8 * 10^-7J/mol
• D) 2.8 * 10⁷J/mol
• E) 7.0 * 10⁶J/mol

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Definitions:

WACC

Weighted Average Cost of Capital; a calculation of a company's capital cost that weighs each category of capital proportionately.

Marginal Tax Rate

The marginal tax rate is the rate of tax applied to the next dollar of taxable income, indicating the percentage of tax an individual or corporation pays on an additional dollar of income.

Yield-to-Maturity

The total return anticipated on a bond if the bond is held until it matures, considering all interest payments and repaid principal.

After-Tax Cost of Debt

After-Tax Cost of Debt represents the net cost of debt to a company after accounting for the tax deductions on interest expenses.