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MMLU-Pro / 9458 / An electron is shot directly

Problem

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question

An electron is shot directly Figure 23-50 Problem 40. toward the center of a large metal plate that has surface charge density −2.0×10−6C/m2-2.0 \times 10^{-6} \mathrm{C} / \mathrm{m}^2. If the initial kinetic energy of the electron is $1.60 \times 10^{-17} \mathrm{~J}$ and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?
Plain-text mathematical notation (without MathML)
An electron is shot directly
Figure 23-50 Problem 40. toward the center of a large metal plate that has surface charge density −2.0×10^(−6)C/m². If the initial kinetic energy of the electron is $1.60 \times 10^{-17} \mathrm{~J}$ and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?
Original LaTeX notation
An electron is shot directly
Figure 23-50 Problem 40. toward the center of a large metal plate that has surface charge density $-2.0 \times 10^{-6} \mathrm{C} / \mathrm{m}^2$. If the initial kinetic energy of the electron is $1.60 \times 10^{-17} \mathrm{~J}$ and if the electron is to stop (due to electrostatic repulsion from the plate) just as it reaches the plate, how far from the plate must the launch point be?

category

physics

options

  1. $0.60$$\mathrm{~mm}$
  2. $0.38$$\mathrm{~mm}$
  3. $0.44$$\mathrm{~mm}$
  4. $0.52$$\mathrm{~mm}$

src

scibench-fund

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Source and history

Official source

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