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AP Physics C E&M 8.1.B: Electric & Gravitational Forces

Practise AP Physics C E&M 8.1.B by comparing Coulomb-force effects on particle acceleration and judging how an added electric force changes tension.

Syllabus
Effective Fall 2024
Course
AP Physics C: Electricity & Magnetism

Exam points

  • Relate Coulomb-force scaling and particle masses to compare proton, deuteron and electron accelerations.
  • Judge how an added electrostatic force changes string tension in a charged-sphere setup.

8.1.B—Describe the electric and gravitational forces that result from interactions between charged objects with mass question 1

[Maximum number: 1]

32. A proton p (charge +e, mass mpm_{p} ) collides head-on with a deuteron d (charge +e, mass 2mp2 m_{p} ). During the collision the particles interact through an electrostatic Coulomb force. Which of the following statements is true about the accelerations a⃗p\vec{a}_{p} of the proton and a⃗d\vec{a}_{d} of the deuteron during the collision?

A

a⃗p=−2a⃗d\vec{a}_{p}=-2 \vec{a}_{d}

B

a⃗p=−a⃗d\vec{a}_{p}=-\vec{a}_{d}

C

a⃗p=−a⃗d/2\vec{a}_{p}=-\vec{a}_{d} / 2

D

a⃗p=a⃗d\vec{a}_{p}=\vec{a}_{d}

E

a⃗p=2a⃗d\vec{a}_{p}=2 \vec{a}_{d}

Figure for Question 8.1.B—Describe the electric and gravitational forces that result from interactions between charged objects with mass question 1 — AP Physics C: Electricity & Magnetism
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