Aproton with the mass m is projected into a uniform electric field that points vertically upward and has magnitude e. the initial velocity of the proton has a magnitude v0 and is directed at an angle ? (alpha) below the horizontal. a)find the maximum distance hmax that the proton descends vertically below its initial elevation. you can ignore gravitational forces. b)express your answer in terms of the variables m, ? , v0, e, e. after what horizontal distance d does the proton return to its original elevation? express your answer in terms of the variables m, ? , v0, e, e. c)find the numerical value of hmax if e = 400n/c , v0 = 5.00

maximum distance h max  = Vo² (sin α)²   m/ 2 qE

Explanation:

We must know the acceleration that the electric field creates on the proton, we use Newton's second law, with the electric force  ( F= qE)

F = ma

qE = ma

a = qE / m

We use the kinematic equations for the y axis

Vy² = Voy² - 2 a Y

At the point of maximum descent Vy is zero

h max =Y=  Voy² /2 a

h max  = Vo² (sin α)²   m/ 2 qE

This is the point of maximum descent of the proton since the speed is zero and from here it starts to rise

b) For this point it is equivalent to the calculation of the range in the movement of projectiles with the given acceleration

R = Vo² sin (2α) / a

R = Vo² sin (2α) m / qE

c) We find the numerical value for the given values

    h max = 5² (sin α)² 1.67 10⁻²⁷ / 2 (1.6 10⁻19 400)

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:

answer:   you might love summer weather, but you don’t want it to feel like the sun is inside your car. but a hot car that just won’t seem to cool down might be a bigger of a problem than you think. your car relies on being at the right temperature.

explanation: