Two metal balls have charges of 7.1 × 10-6 coulombs and 6.9 × 10-6 coulombs. they are 5.7 × 10-1 meters apart. what is the force of interaction between the two balls? (k = 9.0 × 109 newton·meters2/coulomb2)

Answer : The force of interaction between them is 1.35 N

Explanation :

Charge 1

Charge 2,    

Distance between charges,

The force of interaction between them is given by using Coulomb's law. It is written as :

k is electrostatic constant

Hence, this is the required solution.

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: