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Engineering Mechanics - Data Intensity 3 Multiple Questions and Answers.
| 6. | What is k.i? | ||
| A. | 0 | ||
| B. | 1 | ||
| C. | -1 | ||
| D. | ? | ||
| 7. | What is {(i.i) + (-i.j) + (-k.k) + (k.i)}.(Ai +Bj + Cz)? | ||
| A. | 1 | ||
| B. | 0 | ||
| C. | A + B + C | ||
| D. | -1 | ||
| 8. | ? = cos-1(A.B/AB). What is the range of ?? | ||
| A. | 0? | ||
| B. | 0? | ||
| C. | 90? | ||
| D. | 0? | ||
| 9. | What is the value of {(AxB).(C.D)x(AxB).(C.D)}? For the four vectors A, B, C and D, with A, B, C and D all lying in the same plane? | ||
| A. | i + j + k | ||
| B. | ?3(i + j + k) | ||
| C. | 0 | ||
| D. | -1(i + j + k) | ||
| 10. | What is (AxB).(BxA); or A = A1i + A2j + A3k and B = B1i + B2j + B3k? | ||
| A. | 0 | ||
| B. | A1B1A2B2i + A2B2A3B3j + A3B3A1B1k | ||
| C. | A1B1A1B2i + A2B2A3B2j + A3B3A1B3k | ||
| D. | A1B1A2B1i + A2B2A2B3j + A3B3A2B1k | ||
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