A vector has a magnitude of 12. When its tail is at the origin it lies between the positive x axis and negative y axis and makes an angle of 30 with the x axis. Its y component is:
A)
B)
C) 6
D) -6
E) 12
Correct Answer:
Verified
Q1: If and neither nor vanish, then:
A)and
Q4: 30° is
A)π/10 radians
B)π/6 radians
C)1 radian
D)π/2 radians
E)π radians
Q6: A vector of magnitude 20 is added
Q9: We say that the displacement of a
Q9: Let .The magnitude of is:
A)5.00
B)5.57
C)7.00
D)7.42
E)8.54
Q14: Let = (2 m)+ (6 m)- (3
Q18: A vector of magnitude 6 and another
Q19: The angle between = (25 m)+
Q19: One radian is approximately
A)10°
B)33°
C)57°
D)90°
E)180°
Q20: If , then:
A)and must be parallel
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