An Electron Is Released from Rest at a Distance Of 9.00

question 86

Multiple Choice

An electron is released from rest at a distance of $9.00 \mathrm {~cm}$ from a fixed proton. How fast will the electron be moving when it is $3.00 \mathrm {~cm}$ from the proton? $\left( k = 1 / 4 \pi \varepsilon _ { 0 } = 8.99 \times 10 ^ { 9 } \mathrm {~N} \cdot \mathrm { m } ^ { 2 } / \mathrm { C } ^ { 2 } , e = 1.60 \right.$ $\left. \times 10 ^ { - 19 } \mathrm { C } , m _ { \text {electron } } = 9.11 \times 10 ^ { - 31 } \mathrm {~kg} , m _ { \text {proton } } = 1.67 \times 10 ^ { - 27 } \mathrm {~kg} \right)$

• A) \(4.64 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)
• B) \(75.0 \mathrm {~m} / \mathrm { s }\)
• C) \(1.06 \times 10 ^ { 3 } \mathrm {~m} / \mathrm { s }\)
• D) \(130 \mathrm {~m} / \mathrm { s }\)
• E) \(106 \mathrm {~m} / \mathrm { s }\)

---

Definitions:

Prisoners

Individuals who have been confined to a prison or jail as a result of committing a crime or awaiting trial.

Special Classes

Educational settings designed to cater to students with particular needs, abilities, or disabilities, providing tailored instruction and resources that differ from standard classroom settings.

Mental Patients

Individuals receiving treatment for mental health disorders or conditions, typically under the care of health professionals.

Stanford-Binet

A standardized test designed to measure intelligence and cognitive abilities in children and adults, originating from Alfred Binet's early work.