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written by
Gary Gladding
published by
the University of llinois Physics Education Research Group
This interactive homework problem features a particle beam made up of many protons with given kinetic energy of 3.25×10-15J. Using information given in the problem, the student must determine the magnitude of a uniform electric field that will stop the protons at a distance of 2 m. The author provides step-by-step interactive help to show students how to solve the problem using either the Work-Energy theorem or kinematics equations. Immediate feedback for both correct and incorrect responses is provided through each step of the problem-solving.
This item is part of a larger collection of interactive problems developed by the Illinois Physics Education Research Group. See Related Material on this page for a link to the full collection.
<a href="https://www.compadre.org/introphys/items/detail.cfm?ID=6449">Gladding, Gary. Illinois PER Interactive Examples: Particle Beam. Urbana: University of llinois Physics Education Research Group, June 16, 2006.</a>
G. Gladding, (University of llinois Physics Education Research Group, Urbana, 2002), WWW Document, (https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4).
G. Gladding, Illinois PER Interactive Examples: Particle Beam (University of llinois Physics Education Research Group, Urbana, 2002), <https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4>.
Gladding, G. (2006, June 16). Illinois PER Interactive Examples: Particle Beam. Retrieved October 9, 2026, from University of llinois Physics Education Research Group: https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4
Gladding, Gary. Illinois PER Interactive Examples: Particle Beam. Urbana: University of llinois Physics Education Research Group, June 16, 2006. https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4 (accessed 9 October 2026).
Gladding, Gary. Illinois PER Interactive Examples: Particle Beam. Urbana: University of llinois Physics Education Research Group, 2002. 16 June 2006. 9 Oct. 2026 <https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4>.
%A Gary Gladding %T Illinois PER Interactive Examples: Particle Beam %D June 16, 2006 %I University of llinois Physics Education Research Group %C Urbana %U https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4 %O text/html
%0 Electronic Source %A Gladding, Gary %D June 16, 2006 %T Illinois PER Interactive Examples: Particle Beam %I University of llinois Physics Education Research Group %V 2026 %N 9 October 2026 %8 June 16, 2006 %9 text/html %U https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/01/p4
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This is a link to the full collection of interactive homework problems by the same author. Complete problem sets are available for both algebra-based and calculus-based courses in introductory physics.
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