State whether the vectors are parallel, orthogonal, or neither.v = i + 
j,
w = i - 4j
A. Parallel
B. Orthogonal
C. Neither
Answer: C
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Solve the problem.The lower edge of a dam is defined by the parabola (see figure). Use a coordinate system with y = 0 at the bottom of the dam to determine the total force on the dam. Lengths are measured in meters. 
A. 60,963,840 N B. 121,927,680 N C. 13,547,520 N D. 243,855,360 N
Simplify the radical expression. Assume that all variables represent positive real numbers.
A. 
B. 4x12
C. 4x27
D. 
Solve the problem.The velocity of water ft/s at the point of discharge is given by 
where P is the pressure 
of the water at the point of discharge. Estimate the rate of change of the velocity with respect to pressure if the pressure is 
(Round to two decimals.)
A. 48.97 ft/s per lb/in.2 B. 0.07 ft/s per lb/in.2 C. 0.61 ft/s per lb/in.2 D. 1.22 ft/s per lb/in.2
Add.-3 + (-10) + (-24) + (-7)
A. -18 B. -44 C. 10 D. -38