When rubidium ions are heated to a high temperature, two lines are observed in its line spectrum at wavelengths. One of the lines has a wavelength of 7.9 x 10-7 m. What are the frequencies of the this line

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:

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

the amount of current in the coil