Find the potential function f for the field F.F = (y - z)i + (x + 2y - z)j - (x + y)k
A. f(x, y, z) = x + y2 - xz - yz + C
B. f(x, y, z) = xy + y2 - xz - yz + C
C. f(x, y, z) = xy + y2 - x - y + C
D. f(x, y, z) = x(y + y2) - xz - yz + C
Answer: B
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Solve the problem.A ladder is resting against a wall. The top of the ladder touches the wall at a height of 12 ft. Find the length of the ladder if the length is 4 ft more than its distance from the wall.
A. 12 ft B. 20 ft C. 24 ft D. 16 ft
Write the expression in the standard form a + bi.(9 + 6i) - (-3 + i)
A. 12 - 5i B. -12 - 5i C. 12 + 5i D. 6 + 7i
Solve.The equation ? = cos-1
gives the phase angle between R and Z in an AC circuit. Find ? if R = 50 ohms and Z = 70 ohms.
A. 0.7° B. 44.4° C. 45.6° D. 135.6°
Represent each given condition using a single variable, x.The base and height of a triangle whose height is seven less than six times its base.
A. base = x; height = 6x - 7 B. height = x; base = 6x - 7 C. height = x; base = 7x - 6 D. base = x; height = 7x - 6