3000 J of work are done by an elevator on a man lifting him to a height of 2.5 m in 0.4 seconds

The energy that the man has gained in being lifted is 3000J which is in the form of potential energy.

Explanation:

Given:

Work done, W = 3000J

Height, h = 2.5m

Time, t = 0.4 seconds

Energy gained = ?

As the man gets lifted, it gains potential energy.

Potential energy will be equal to the work done by the elevator.

We know,

potential energy = mgh

Thus, the energy that the man has gained in being lifted is 3000J which is in the form of potential energy.

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:

magnified images possible images can be real = projected onto a screen