Physics, 02.09.2019 01:30 rudolph34

What is the strength of the electric field ep 9.0 mm from a proton?

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The working equation to be used for this is written below:

E = kQ/d²
where
E is the electric field
k is a constant equal to 8.99 x 10⁹ N m²/C²
Q is the charge
d is the distance

The charge for a proton is equal to 1.6021766208×10⁻¹⁹ C. Substituting the values:

E = (8.99 x 10⁹ N m²/C²)(1.6021766208×10⁻¹⁹ C)/(0.009 m)²
E = 1.778×10⁻⁵ N/C

Answer from: Quest

your answer is, orbit around the nucleus

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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