An Electron Passes Through a Region Where There Is an Electric

question 55

Multiple Choice

An electron passes through a region where there is an electric field E = 4.0 × 10⁵ V/m and a magnetic field B = 0.090 T. The directions of the electric field, the magnetic field, and the electron velocity are mutually perpendicular. If the electron is not deflected from its straight-line path through these fields, its speed must be

• A) 3.6 × 10⁴ m/s.
• B) 5.0 × 10⁵ m/s.
• C) 2.2 × 10^-7 m/s.
• D) 1.2 × 10⁴ m/s.
• E) 4.4 × 10⁶ m/s.

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Definitions:

Average Variable Costs

The sum of all costs that change with production volume, divided by the number of units produced.

Drones

Unmanned aerial vehicles (UAVs) controlled by remote pilots or autonomously by onboard computers, used for various purposes including surveillance, delivery, and photography.

Average Variable Costs

Costs that vary with the level of output produced, divided by the quantity of output produced.

Drones

Unmanned aerial vehicles (UAVs) that can be remotely controlled or fly autonomously through software-controlled flight plans in their embedded systems.