Physics, 23.08.2020 14:01 alonzoyt0

Two particles with positive charges q1 and q2 are separated by a distance s. Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero

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Answer from: laylaaaaah1603

The distance is $z = \frac{1 + \sqrt{ \frac{k * q_2 }{ k * q_1}}}{s}$

Explanation:

From the question we are told that

The positive charges is $q_1 \ and \ q_2$

The distance of separation is

Generally at the point where the electric field is zero would be a point where

The electric field due to q_1 = The electric field due to q_2

Generally the electric field due to q_1 is mathematically represented as

$E_1 = \frac{k * q_1}{ z^2 }$

Since we are taking our reference from q_1 then the electric field due to q_2 is mathematically represented as

$E_2 = \frac{k * q_2}{ (s- z)^2 }$

$\frac{k * q_1}{ z^2 } = \frac{k * q_2}{ (s- z)^2 }$

k * q_1 * (s- z)^2= k * q_2 * z^2

$[ \frac{s -z }{z} ]^2 = \frac{k * q_2 }{ k * q_1}$

$\frac{s -z }{z} = \sqrt{ \frac{k * q_2 }{ k * q_1}}$

$\frac{s}{z} - 1 = \sqrt{ \frac{k * q_2 }{ k * q_1}}$

$z = \frac{1 + \sqrt{ \frac{k * q_2 }{ k * q_1}}}{s}$

Answer from: Quest

Ithink it is c ,i hope i you

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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Two particles with positive charges q1 and q2 are separated by a distance s. Along the line connecti...

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