Find the angle between u and v in radians.u = 6j - 5k, v = 3i - 7j - 9k
A. 1.57
B. 0.03
C. 1.56
D. 1.54
Answer: D
Mathematics
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Find the vector projv u.v = k, u = 2i + 6j + 9k
A. 
i + 
j + 
k
B. 
k
C. 
i + 
j + 
k
D. 9k
Mathematics
Use Stokes' Theorem to calculate the circulation of the field F around the curve C in the indicated direction.F = -7y3i + 7x3j + 8z3k ; C: the portion of the paraboloid x2 + y2 = z cut by the cylinder 
A. - 
?
B. 1701?
C. -1701?
D. 
?
Mathematics
Convert the given quantity to the desired unit. Round to the nearest tenth if necessary.34 m to ft
A. 10.4 ft B. 13.4 ft or 13.3 ft C. 111.5 ft D. 86.4 ft or 87.2 ft
Mathematics
Perform the indicated operation. Write the answer in proper scientific notation.(5.5 × 1010) × (1.2 × 10-7)
A. 6.6 × 102 B. 6.6 × 104 C. 6.6 × 103 D. 66 × 102
Mathematics