Fred’s marginal benefit from the fence is mbf = 70 – q where q measures the height of the fence. sammy’s marginal benefit from the fence is given by mbs = 40 – 2q. assume that the marginal cost of building the fence is a constant $80 per foot. find an equation to represent the total marginal benefit of the fence.

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.