Which of the following is not a safety practice for working near power lines?
a. locate underground lines before digging
b. provide inadequate training to workers about power line hazards
c. use rider posts, when available, to prevent getting to close to power lines
d. verify that the owner has de-energized and visibly grounded the power lines

Describir textbook icon_person mira los dibujos y describe lo que está pasando. usa los verbos de la lista.

The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?

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