SUMMARY
In a cathode ray tube, electrons are accelerated by a constant electric force of 6.22 x 10-17 N over a distance of 2.00 cm, reaching a speed that can be calculated using kinematic equations. After this initial acceleration, the electrons travel an additional 46.5 cm at a constant velocity before impacting the screen. The total time taken for the electrons to traverse the entire length of the tube can also be determined through kinematic analysis.
PREREQUISITES
- Understanding of Newton's Second Law of Motion
- Familiarity with kinematic equations
- Basic knowledge of electric forces and their effects on charged particles
- Ability to perform unit conversions (e.g., cm to meters)
NEXT STEPS
- Calculate the final speed of electrons using the equation: v = u + at
- Determine the time taken to travel the first 2.00 cm using the equation: t = (v - u) / a
- Analyze the motion of electrons at constant velocity for the remaining 46.5 cm
- Explore the effects of varying electric forces on electron acceleration in cathode ray tubes
USEFUL FOR
Physics students, educators, and anyone interested in the principles of electron motion in cathode ray tubes and their applications in electronic devices.