An Electron Is Projected Horizontally with a Speed of 5

question 79

Multiple Choice

An electron is projected horizontally with a speed of 5.0 × 10⁶ m exactly in the middle of two parallel plates at potentials of −40 V and 104 V, respectively. The plate separation is 3.0 cm. The plates are long enough that the electron, rather than passing completely between the plates, eventually strikes the plate sitting at 104 V potential. What is the speed of the electron when it strikes the plate? The mass of the electron is 9.11 × 10⁻³¹ kg.

• A) 8.7 × 10⁶ m/s
• B) 7.1 × 10⁶ m/s
• C) 6.0 × 10⁶ m/s
• D) 5.0 × 10⁶ m/s

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Definitions:

Aggressive Communication

A style of communicating that is forceful, hostile, or demanding, often at the expense of others.

Assertive Communication

A style of expressing oneself in a confident and direct manner, while still respecting others.

Passive Communication

A form of communication where the communicator fails to express their needs or feelings directly.

Directive Communication

A style of communication where instructions, commands, or directions are given clearly and directly.