At what height above the ground must a body of mass 20kg be situated in order to have potential energy equal in value to the Kinetic energy possessed by another body of mass 20kg moving with a velocity of 10m/s? (Take g = 10m/s?)

Assuming the height of the first body is h and the speed of the second one is v, just equate the PE of the first with the KE of the second:

mgh = (1/2) mv^2

since they have equal mass, it cancels out and you can solve for h.

Explanation:

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:

i think the answer would be reserve.