In a longitudinal wave, particle displacement is opposite to the direction of wave motion. Question 12. 12. In the Waves lab, you changed _____ to see how it would affect wave speed. (Points : 3) length of string tension of string type of string how hard you plucked the string Question 13. 13.
Six months If you file for an extension on your individual tax return, the IRS will give you six more months to complete the return. The IRS changed the extensions in 2006. There is now only the option for 6-month extensions (it used to be that you would file one extension, and could then file a second one for a total of 6 months).
Confidence votes 22.2K. Federal laws specify how long you must retain the documentation to support the filing of income tax returns. For most taxpayers, this period is three years from the original due date of the return or the date the return is filed, whichever is later.