Please solve the following and show instructions. The answers are written at the end of each question, thank you!

7) A force of 6.00 x 102 N Is applied to a metal box to pull it 15m across a floor. The rope used to pull the box is held at an angle of 46 " with the floor , How much work Is done ? (7, 63 x 103J ) 9 ) it takes 1. 20 x 104 J of work to pull a loaded sled weighing 8 x 102 N a distance of 2 x 102 m , To do this, a force of 1.20 x 102 N is exerted on a rope, which makes an angle with the horozontal . At what angle is the rope held ? ( 60 . ) 12 ) A student librarian picks up a . 95N book from the floor to a height of 1.25m . She carries the book 8.0 m to the Shelves and places the book on a shelf that is 2.0m high . How much work has been done on the book ? ( 1. 9 5 )