course Phy 241
I completed the query, but it did not copy to my hard drive. Do I need to complete it again? end of document
Except where an error message occurs, it is not possible for the Query to accept answers without writing to the hard drive, and it is not possible for the program to erase or delete anything. The most common source of lost data is accidentally saving a previous version of the SEND file, but I'm sure there are other ways data could be lost.
If anything on that Query is not clear to you, you should repeat those parts. No need to redo anything you are sure you understand.