Most certainly is
i need to repair my wooden fence and the studs are rotting i need about twenty studs
1.5" x 2.5" x 96"
If you dont mind how it looks, sure.
In theory, yes
Yes the price is not by the foot it is for the stud.
Yes, this can be used for a desk. If you want a smooth table top though, I would not use these. They will warp and bend.
No, you need to sand it
Yes, with a table saw you can do that cut. Home Depot will not do that cut in store though
Spruce, Pine or Fir