|
Section 1.3-1.4: |
| 1) | If the vertical vector, upward pointing unit vector is denoted by e and the unit vector in the
direction of the horizontal projection of F is denoted by eŽ, then F = 12 2-1/2 (e + eŽ). |
| 2) | Let e denote the unit vector in the direction of the vertical projection of F and let eŽ denote
the unit vector in that of the horizontal projection. Then, F = 5 (e + 31/2 eŽ).
|
| Sections 1.6-1.7: |
| 1) | The work is 3 as measured in the implied units. |
| Sections 1.7-1.8: |
| 1) | The angular momentum vector is r x  r =
(-31/2/2, 0, 1) which is constant.
This means implies that the motion is in the plane where -31/2 x/2 + z = 0. |
| Section 5.1: |
| 1) | The work is 5/3 in the implied units. |
| Section 2.7: |
| 1) | The minima is at p = 0 and  =  , the value there is 1. |
| Section 3.4: |
| 1) | The total mass is 1000/3. The center of mass is (0, 0, 15/4). |
| Section 5.5 |
| 1) | The total charge is 4. |
| 2) | The total charge is 4/3. |
