What is the magnitude of the electric force on one of the masses?

Asked by maham237 @ in Physics viewed by 334 People

Two 4.0kg masses are 1.0m apart on a frictionless table. Each has 1.0μC of charge. Part A What is the magnitude of the electric force on one of the masses?
What is the initial acceleration of each mass if they are released and allowed to move?

Answered by maham237 @



Electrostatic force = (Constant) x (charge-1) x (charge-2) / (distance²)

For all-SI units, the constant is almost exactly 9 x 10⁹ meter/farad.

So the force (on each mass) is

(9 x 10⁹) x (1.0 x 10⁻⁶) x (1.0 x 10⁻⁶) / (1.0)² =

(9 x 1 x 1) x 10⁻³ / (1) =

9 x 10⁻³ newtons .

To find the acceleration, use Newton's second law of motion:

Force = (mass) x (acceleration)

Divide each side by (mass): Acceleration = (force) / (mass)

Acceleration = (9 x10⁻³) N / (4.0kg)

Acceleration = 0.00225 meter/second²

If the charges have opposite signs, then the acceleration of each mass is
0.00225 m/s² in the direction toward the other one when you letum go.
The force on each one, and therefore the acceleration, grows constantly,
as the distance between them shrinks.

If both charges have the same sign, then the acceleration of each mass is
0.00225 m/s² in the direction away from the other one when you letum go.
The force on each one, and therefore the acceleration, shrinks constantly,
as the distance between them grows.


Similar Questions

Which pair does not have an electric force between them

Asked by admin @ in Physics viewed by 372 persons

30.51 Which pair does NOT have an electric force between them? a positive object and negative object two positive objects two neutral objects two negative objects Save and Exit Next …

The relationship among mass force and acceleration is explained by

Asked by admin @ in Physics viewed by 315 persons

The relationship among force, mass, and acceleration is stated in ___ A. The law of conversation of momentum B. Newton's first law of motion C. Newton's second law of motion …

Calculate the mass of one atom of oxygen

Asked by admin @ in Chemistry viewed by 358 persons

Calculate a) The mass of one atom of oxygen. b) The mass of one molecule of oxygen. c) The mass of one ion of oxygen.

Why two electric lines of force never intersect

Asked by admin @ in Physics viewed by 366 persons

Why two electric lines of force cannot intersect each other​

Compare the magnitude of centripetal and centrifugal force

Asked by admin @ in Physics viewed by 276 persons

Compare the magnitude of centripetal and centrifugal force

A particle of unit mass undergoes one dimensional

Asked by admin @ in Physics viewed by 369 persons

A particle of unit mass undergoes one dimensional motion such that its velocity varies according to v(x)=bx^-{2n} where h and n are constants amd x is the position of the …

Force of interaction between two coaxial short electric dipoles

Asked by admin @ in Physics viewed by 321 persons

force between two short electric dipole placed on the same axis at a distance R varies as (1) R^-1 (2)R^-2. choose the correct answer

A force acting on a body of mass 2kg

Asked by admin @ in Physics viewed by 292 persons

a force acting on a body of mass 2 kg varies with time as shown in figure. find impulse of force and final velocity of force . ​

Is there any lower limit to the electric force

Asked by admin @ in Physics viewed by 285 persons

Is there any lower limit to the electric force between 2 particles placed at a separation of 1 cm?

Draw the lines of force of an electric dipole

Asked by admin @ in Physics viewed by 315 persons

Draw electric lines of forces due to an electic dipole.

An electric line of force in the xy plane

Asked by admin @ in Physics viewed by 307 persons

An electric line of force in the xy plane is given by equation x2+y2=1. A particle with unit positive charge, initially at rest at the point x=1,y=0 in the xy …

Two parallel and opposite forces each of magnitude 4000n

Asked by admin @ in Physics viewed by 322 persons

Two parallel and opposite forces each 4000 newton applied tangentially to the upper and lower faces of a cubical metal block 25 cm on a side find the angle of …

Force between two objects of equal masses is f

Asked by admin @ in Physics viewed by 317 persons

Force between two objects of equal masses is f . if 25% mass of one object is transferred to the other object , then find new force

The mass of one atom of hydrogen is approximately

Asked by admin @ in Chemistry viewed by 325 persons

The mass of one atom of hydrogen is approximately

A man of mass m stands at one end

Asked by admin @ in Physics viewed by 303 persons

A man of mass M stands at one end of a plank of length L of mass m that rests on a smooth horizontal surface. If the man walks to …

Most viewed questions in Physics

Jeevandeep health and physical education std 10 answers pdf

Asked by admin @ in Physics viewed by 11074 persons

Hc verma physics class 9 solutions of describing motion

Asked by admin @ in Physics viewed by 2673 persons

How to leave nightmare land answer key

Asked by maham237 @ in Physics viewed by 1599 persons

Base area and stability of some objects with different shapes

Asked by admin @ in Physics viewed by 1533 persons

Which of the following statements about safe lifting are correct

Asked by admin @ in Physics viewed by 1518 persons

Porous water-absorbing mass of fibers

Asked by wiki @ in Physics viewed by 1497 persons

Absorption of water by filter paper is due to

Asked by admin @ in Physics viewed by 1440 persons

A composite wire of uniform diameter 3mm

Asked by admin @ in Physics viewed by 1407 persons

At a distance l 400m from the traffic light

Asked by admin @ in Physics viewed by 1336 persons

A rocket of mass m is launched straight up with thrust f⃗ thrust.

Asked by maham237 @ in Physics viewed by 1317 persons

A hair dryer with a resistance of 9.6 ohms operates at 120 volts for 2.5 minutes. the total electrical energy used by the dryer during this time interval is

Asked by maham237 @ in Physics viewed by 1206 persons

Mind map for light reflection and refraction class 10

Asked by admin @ in Physics viewed by 1149 persons

The african cicada is the world's loudest insect, producing a sound intensity level of 107 db at a distance of 0.50 m. what is the intensity of its sound (in w/m2) as heard by someone standing 3.1 m away? express your answer in watts per meter squared.

Asked by maham237 @ in Physics viewed by 1101 persons

A thief runs at a speed of 10m s

Asked by admin @ in Physics viewed by 1097 persons

A 5.8 x 10 4 watt elevator motor can lift

Asked by maham237 @ in Physics viewed by 1082 persons