Question

In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.40 × 10?17 N during the first 1.70 cm of the tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen. Find the speed of the electrons when they hit the screen.

          In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.40 × 10?17 N during the first 1.70 cm of the tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen.
Find the speed of the electrons when they hit the screen.

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In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.40 × 10?17 N during the first 1.70 cm of the tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen.
Find the speed of the electrons when they hit the screen.

Added by Madeline B.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sri K

03/13/2023

Step 1

We can use Newton's second law of motion: $F = ma$ where $F$ is the force, $m$ is the mass of the electron, and $a$ is the acceleration. The mass of an electron is approximately $9.11 \times 10^{-31}$ kg. We can rearrange the equation to solve for Show more…

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In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.40 × 10−17 N during the first 1.70 cm of the tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen. Find the speed of the electrons when they hit the screen.

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