Find the reciprocal.
A. 
B. 
C. 13
D. 
Answer: B
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A variable force of magnitude F(x) moves a body of mass m along the x-axis from x1 to x2. The net work done by the force in moving the body from x1 to x2 is 
where v1 and v2 are the body's velocities at x1 and x2. Knowing that the work done by the force equals the change in the body's kinetic energy, solve the problem.A 2-oz tennis ball was served at 90 ft/sec about (61 mph). How much work was done on the ball to make it go this fast? (To find the ball's mass from its weight, express the weight in pounds and divide by 
the acceleration of gravity.)
A. 16 ft-lb B. 7 ft-lb C. 15 ft-lb D. 32 ft-lb
Solve the problem. Round to the nearest tenth unless indicated otherwise.The resistance of a wire varies directly as the length of the wire and inversely as the square of the diameter of the wire. A 20 foot length of wire with a diameter of 
has a resistance of 
What would the resistance be for a 
length, with diameter 
of the same kind
of wire ? A. 368 ohms B. 375 ohms C. 372.5 ohms D. 387 ohms
Complete the graph by shading the correct region.x > -3
A. 
B. 
C. 
D. 
Graph the linear equation.y = 2x + 2
A. 
B. 
C. 
D. 