Two blocks are pushed together, compressing a spring between them by compression distance x. after being released, the spring falls to the ground, and the carts with masses ma and mb move along a frictionless track reaching a max height ha and hb respectively. which variable increasing would decrease ha
write an expression for maximum heigh ha in terms of ma mb k x and g

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:

what type of charge does it have? negative

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide