Sodium Has a Work Function of 2

question 19

Multiple Choice

Sodium has a work function of 2.46 eV.Of the following wavelengths,which is the one of the longest wavelength that could cause photoelectrons to be released from the sodium?

• A) 300 nm
• B) 400 nm
• C) 500 nm
• D) 600 nm
• E) 700 nm

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Marginal Tax Rate

The tax rate that applies to the next dollar of taxable income; the percentage of tax applied to your income for each tax bracket in which you qualify.

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The amount of income that is subject to tax, after all allowable deductions, exemptions, and adjustments.

Average Tax Rate

The ratio of the total amount of taxes paid to the total income, showing the percentage of income paid in taxes.

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A taxation system where the tax rate increases as the taxable amount (income or profits) increases, making it proportionately more taxing on higher earners.