A student is swinging on a swing at the playground. At their maximum height, they are 2.3 meters from the ground. When they reach that height, they are not moving for a moment. What is their potential energy at this maximum height if their mass is 60 kg? J. Use g = 10m/s/s for your calculation.

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

power out to power in less than 100%

what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

neither accurate nor precise.