Two particles, with identical positive charges and a separation of 3.41 × 10-2 m, are released from rest. Immediately after the release, particle 1 has an acceleration a1 whose magnitude is 3.68 × 103 m/s2, while particle 2 has an acceleration a2 whose magnitude is 10.8 × 103 m/s2. Particle 1 has a mass of 4.66 × 10-6 kg. Find (a) the charge on each particle and (b) the mass of particle 2.

(a) the charge on each particle is 4.71 x 10⁻⁸ C

(b) the mass of particle 2 is 1.59 x 10⁻⁶ kg

Explanation:

given information:

distance of both particle, r = 3.41 × 10⁻² m

acceleration of the particle 1, a₁ = 3.68 × 10³ m/s²

acceleration of the particle 1, a₂ = 10.8 × 10³ m/s²

the mass of particle 1, m₁ = 4.66 × 10⁻⁶ kg

(a) the charge on each particle

the both particle has positive identical charge, thus q₁=q₂=q. to find the charge we can use the electrostatic force equation

F = k q₁q₂/r²

where

F = electrostatic force (N)

k = coulomb's constant (8.99 x 10⁹ N.m²/C²)

q = the charge (C)

r = then distance of the charge (m)

F = k q₁q₂/r²

  =  k q²/r²

  = 8.99 x 10⁹ q²/(3.41 × 10⁻²)²

  = 7.73 x 10¹² q² N

according to newton's second law

F = ma

F = m₁a₁

7.73 x 10¹² q² = (4.66 × 10⁻⁶) (3.68 × 10³)

q² = (4.66 × 10⁻⁶) (3.68 × 10³)/7.73 x 10¹²

q = 4.71 x 10⁻⁸ C

(b) the mass of particle 2

F₁=F₂, the force of both particle is the same

m₁a₁ = m₂a₂

m₂ = m₁a₁/a₂

     = (4.66 × 10⁻⁶) (3.68 × 10³)/(10.8 x 10³)

     = 1.59 x 10⁻⁶ kg

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:

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​