Q4) A vector A has components A = 6.8 unit and A, = -7.4 unit. What is the magnitude and direction of A with respect to positive x-axis? A) 10 units,0 312° B) 10 units,0 = 47° C) 8.8 units,0 = 312 D) 8.8 units,0= 47°

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Chapter3: Vectors
Section: Chapter Questions
Problem 3.41P: Express in unit-vector notation the following vectors, each of which has magnitude 17.0 cm. (a)...
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D) - 5.9
B
Q4) A vector A has components A = 6.8 unit and A, =-7.4 unit. What is
the magnitude and direction of A with respect to positive x-axis?
A) 10 units,0 = 312°
%3D
B) 10 units, 0= 47°
C) 8.8 units,0 = 312
D) 8.8 units ,0= 47°
Q5) What is the angle between vector A = 4i + 3j + k and the positive z-
axis?
ma
A) 68.2°
B) 78.7°
C) 32. 6°
11.3°
Q6) Let A = 2i+ 3j + k andB 1-3/-2k. What is A xB ?
A) -31 +3j-6k
B) - 31 +5/-9k
C) - 41 + 3j- k
D) -91-3j-3k
21Page
Transcribed Image Text:D) - 5.9 B Q4) A vector A has components A = 6.8 unit and A, =-7.4 unit. What is the magnitude and direction of A with respect to positive x-axis? A) 10 units,0 = 312° %3D B) 10 units, 0= 47° C) 8.8 units,0 = 312 D) 8.8 units ,0= 47° Q5) What is the angle between vector A = 4i + 3j + k and the positive z- axis? ma A) 68.2° B) 78.7° C) 32. 6° 11.3° Q6) Let A = 2i+ 3j + k andB 1-3/-2k. What is A xB ? A) -31 +3j-6k B) - 31 +5/-9k C) - 41 + 3j- k D) -91-3j-3k 21Page
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