tag:blogger.com,1999:blog-5088860151651047897.post1038260126511677390..comments2017-08-08T19:49:18.516-04:00Comments on Jacobs Physics: Can an Electric Field Be Negative?Greg Jacobshttp://www.blogger.com/profile/03854009948036330746noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-5088860151651047897.post-39020385207733491822017-04-24T00:34:08.272-04:002017-04-24T00:34:08.272-04:00A vector is neither positive nor negative. If we c...A vector is neither positive nor negative. If we choose to represent the vector using a coordinate system then the vector's components (but not the vector) can be positive or negative. Often we do not make a distinction between a vector and its components in introductory physics courses but we should. The components of a vector are like its address; they help identify a vector. I am not my address, neither is the vector its components.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-5088860151651047897.post-18914887254214219242014-09-26T17:54:06.664-04:002014-09-26T17:54:06.664-04:00exactly! My students want to put in negative charg...exactly! My students want to put in negative charges with the (-) and then what does that mean? Much too confusing!raidergirl3https://www.blogger.com/profile/03629915042716259349noreply@blogger.com