Which of them is not correct? a) j x j = 0 b) j x k = i c) j x i = k d) j x i = -k

If x= Acos(at +6) then v is a. -aA sin(at +ø). b. aA cos(at + 0). c. w²A sin(at +9). d. +aA sin(at + ø). e. -w*A cos(at +ø).

Physics

What is the magnetic field strength and direction at point A for the figure shown? Note that the current carrying wires are parallel with a separation of 6.0 cm and Point A is 2.0 cm away from the wire carrying 6A current. A • 6 A 12.0 cm 6.0 cm 20 A

Which UNIT will the answer to this operation have? (We're only interested in the units, not the number.) If the units cancel out, choose "No Unit" If the operation is not valid, choose "Not Valid" 5 s - 2 m A) s m C) s – m S B) No Unit D) Not Valid Enter

3. Perform the following mathematical operations, expressing the answers to the correct number of significant digits. a. 463.66 + 29.2 + 0.17 b. 426.66 - 39.2 c. (2.6)(42.2) d. (65) (0.041)(325) 650 e. (0.0060)(26) (55.1) i. 3.52 0.452 9. 0.012 (5.21)(0.45) h. 0.0060 j. V4.9

Q16) Let A = 2i + 3j + k and B = i-3j – 2k. What is A x B ? A) - 3i + 3j – 6k B) - 3і + 5j — 9k C) - 4i +3j – k ma D) - 9i – 3j – 3k

89) Try to solve this question, no handwritten, only typing

9- Please I want answers of sub-part (a) by typing it. Many Thanks