An intuitive approach to inertial forces and the centrifugal force paradox in general relativity
As the velocity of a rocket in a circular orbit near a black hole increases, the outwardly directed rocket thrust must increase to keep the rocket in its orbit. This feature might appear paradoxical f...
As the velocity of a rocket in a circular orbit near a black hole increases, the outwardly directed rocket thrust must increase to keep the rocket in its orbit. This feature might appear paradoxical f...
Student understanding of symmetry and Gauss's law of electricity
We investigate the difficulties that students in calculus-based introductory physics courses have with the concepts of symmetry, electric field, and electric flux which are important for applying Gaus...
We investigate the difficulties that students in calculus-based introductory physics courses have with the concepts of symmetry, electric field, and electric flux which are important for applying Gaus...
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Theoretical comparisons of average normalized gain calculations
American Journal of Physics -- October 2006 -- Volume 74, Issue 10, pp. 917-922
Issue Date: October 2006
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Since its introduction, the normalized gain or the ![[bold-sans-serif g]](http://scitation.aip.org/servlet/GetImg?key=AJPIAS000074000010000917000001%3A0%3A0%3A28&t=a&d=a)
-factor has been widely used in assessing students' performance in pre- and post-tests. The average -factor can be calculated using either the average scores of the class or individual student's scores. In general, these two calculations produce different results. The nature of these two results is explored for several idealized situations. The results suggest that we may be able to utilize the difference between the two results to extract information on how the population may have changed as a result of instruction.
©2006 American Association of Physics Teachers
©2006 American Association of Physics Teachers
| History: | Received 13 October 2004; accepted 19 May 2006 |
| Permalink: | http://dx.doi.org/10.1119/1.2213632 |