This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Find the angle between the vectors. (First find an exact expression and then approximate to the nearest degree.) a = (6, 3, 2) b = (2, 1, 2) 76.225853 76 ° 6. [SCalcCC2 9.3.24.] 6/6 points Find the scalar and vector projections of b onto a . a = 2 i 3 j + k , b = i + 6 j 2 k Scalar projection4.81074.81 Vector projection18/72.57 i + 27/7 3.86 j + 9/71.29 k 7. [SCalcCC2 9.3.30.] 2/2 points Find the work done by a force of 27 lb acting in the direction N50°W in moving an object 7 ft due west. 144.7824 145 ftlb 12/9/08 7:40 PM Section 9.3 Page 3 of 3 http://www.webassign.net/[email protected]/[email protected] 8. [SCalcCC2 9.3.32.] 3/3 points A wagon is pulled a distance of 40 m along a horizontal path by a constant force of 20 N. The handle of the wagon is held at an angel of 30° above the horizontal. How much work is done? 692.820323 693 joules...
View
Full Document
 Spring '08
 Bliss
 Dot Product, Force, April Alston, BRANDON L MA, PM EDT Description

Click to edit the document details