What Is the Total Energy of an Electron Moving with a Speed

question 69

Multiple Choice

What is the total energy of an electron moving with a speed of 0.950c? (c = 3.0 × 10⁸ m/s,m_el = 9.11 × 10^-31 kg)

• A)2.6 × 10^-13 J
• B)8.2 × 10^-14 J
• C)1.1 × 10^-13 J
• D)1.2 × 10^-14 J

---

Definitions:

Profit Margin

A financial metric expressed as a percentage that measures how much of every dollar of revenue is retained as profit after all expenses have been deducted.

Net Income

The income a company retains following the subtraction of all expenses and taxes from the gross revenue.

Sales

The total amount of goods or services sold by a company, typically reported within a specific period.

Return On Equity

An indicator of how well management is leveraging company assets to produce profits, found by dividing the net income by the equity of the shareholders.