The medium is affects force. We know this from the constant, k, in Coulomb's Law, that depends on the medium. If you place a charge in an insulator or dielectric medium, like water, the force between them will decrease. This decrease can be taken into account by the medium's permittivity.

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4 months ago

Coulomb’s Law Physics Electric Charge and Field

Electric charges can be positive or negative, but what determines the direction of the Coulomb force?

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Syed Aquib Ur Rahman

Contributor-Level 10

The polarity of the charges that are interacting help us understand the direction. Like charges, whether it's both positive or negative, will always repel. Unlike charges, when one is positive and the other is negative, will always attract each other. The force acts along the line connecting the two charges.

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Coulomb’s Law Physics Electric Charge and Field

What is the main physical condition for Coulomb's Law to be accurate?

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Syed Aquib Ur Rahman

Contributor-Level 10

The main condition would be that the point charges have to be at rest or be in a stationary position, for Coulomb's Law to work. The thing is, if the charge particles move, we have to consider the impact of magnetic forces then.

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4 months ago

Engineering courses to become a btech

Is it really important to take B.Tech course to make our future bright

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Bandi Venkata Yaswanth

Beginner-Level 2

Yes I think B.Tech is Right choice

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Exam BSc Nursing

Want to know cg vyapam B.Sc nursing exam syllabus

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Chemistry Class 12th

The angular frequency of a simple pendulum is w rad/s. Now the length is made one fourth of the original length, the angular frequency becomes

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alok kumar singh

Contributor-Level 10

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Chemistry Class 11th

A body of mass M is rotating in a vertical circle of radius r with critical speed. The difference in its kinetic energy at the top and the bottom is

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alok kumar singh

Contributor-Level 10

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Chemistry Chemical Bonding and Molecular Structure Chemistry

Two trains 101 m and 99 m in length are running in opposite direction with velocities 54 km/h and 36 km/h. In what time they will completely cross each other?

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alok kumar singh

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Haloalkanes and Haloarenes Chemistry

To measure light intensity we use

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alok kumar singh

Contributor-Level 10

Photodiode in reverse bias mode is used as intensity measuring device.

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Global College College of Management

How many students form MCA got placed in Akash global college of management and Science

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Amines Chemistry

After one alpha particle emission and one b^– particle emission from a nucleus

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alok kumar singh

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The p -Block Elements Chemistry

The Boolean equation for the circuit as shown in figure is

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alok kumar singh

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The S-block Elements Chemistry

When light of maximum wavelength 300 nm falls on a photoelectric emitter, photoelectrons are liberated. For another emitter however light of maximum wavelength 600 nm causes photoelectric emission. The ratio of work functions of first emitter to second emitter will be

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