A Proton That Is Initially at Rest Is Accelerated Through $500 \mathrm {~V}$

question 93

Multiple Choice

A proton that is initially at rest is accelerated through an electric potential difference of magnitude $500 \mathrm {~V}$ . What speed does the proton gain? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } , m \right.$ proton $\left. = 1.67 \times 10 ^ { - 27 } \mathrm {~kg} \right)$

• A) \(1.1 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)
• B) \(3.1 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)
• C) \(2.2 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)
• D) \(9.6 \times 10 ^ { 5 } \mathrm {~m} / \mathrm { s }\)

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Definitions:

Directed Verdict

A ruling by a judge in a jury trial, typically made after the plaintiff has presented their case, where the judge decides the case in favor of one party without it going to jury decision.

Motion

A formal proposal by a member of a court, seeking a decision on a legal matter.

Matter of Law

Issues resolved by a judge, concerning the application or interpretation of the law, as opposed to matters of fact, which are decided by a jury.

Recross-examination

The questioning of a witness by the opposing side after re-examination, intended to clarify or counter information that came up during re-examination.