Find the angle between u and v in radians.u = -10i + 9j - 5k, v = 3i + 7j - 6k
A. 0.47
B. 1.36
C. 1.10
D. 1.57
Answer: C
Mathematics
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Solve the problem by integration.The current i (in A) as a function of the time t (in s) in a certain electric circuit is given by 
Find the total charge that passes a given point in the circuit during the first three seconds.
A. 1.881 C B. 7.522 C C. 3.738 C D. 3.761 C
Mathematics
A. -w7 B. w12 C. |w7| D. w7
Mathematics
Fill in the blank with one of the words listed below.
The horizontal number line in the rectangular coordinate system is called the 
.
A. x-axis B. y-intercept C. x-intercept D. y-axis
Mathematics
Determine between which two consecutive whole numbers each square root lies.
A. 13 and 14 B. 12 and 13 C. 10 and 11 D. 11 and 12
Mathematics