Physics, 05.07.2019 01:30 gagem1278

The diagram shows the electric field around two charged objects. what are the correct labels for the image? a) w: positive x: positive b) w: negative x: negative c) w: negative x: positive d) w: positive x: negative

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Answer from: nana55959

Here we have been given two charged body W and X.

We are asked to determine the nature of charge.

Before coming into conclusion, first we have to understand the electric field lines.

The electric field lines are pictorial representation of imaginary lines which are drawn to denote the electric field in a graphical way.

The electric field line starts from a positive charge and ends at a negative charge.It means for positive charges the electric field lines are outward and for negative charges the filed lines will be inward.

In the given diagram,the filed lines for W is towards W itself.The same is also in case of X.

Hence both the charges must be negative in nature.

Hence the correct answer to the question will be B i.e W negative and X: NEGATIVE.

Answer from: sil91

The correct answer is the option B which is both points X and W are negative.

Explanation:In the above picture it is shown that There are two points W and X. The field of lines are entering to the both points.There is no line which went to X from W or from X to W.This Shows that both points have the same charge either positive or negative. Because both have repulsive force to each other.Now it is known that electric field of lines always went from positive ion and enters to negative ions.It means both points re negative as lines are entering both points.

Answer from: Quest

dang that balls went far

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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