Coloumb law Flashcards

1
Q

define electrostatics

A

branch of physics and chemistry that studies interactions of non-moving charges and their effects in terms of forces and fields

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2
Q

define electrodynamics

A

electrostatics concepts but studying charged particles in motionunder acceleration

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3
Q

application of electrostatics

A

preliminary study of proton/electron interaction
equilibrium positions of atoms within solids
inorganic chemistry
conduction properties of materials within solids

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4
Q

the unit of charge

A

coulomb 1 C = 1 A s

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5
Q

charge of a proton

A

+1.602 x 10^-19

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6
Q

charge of an electron

A

-1.602 x 10^-19 C

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7
Q

charge of a neutron

A

no charge

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8
Q

letter for charge of an electron and proton

A

+ and - e

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9
Q

what is coulombs law

A

objects with an electrical charge exert an electrostatic force on each other

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10
Q

the two types of electrostatic forces

A

attractive and repulsive

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11
Q

what is an absolute charge

A

the charge given without its sign

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12
Q

what is coulombs law equation

A

ke = modulus q2 x modulus q1 / r^2

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13
Q

assumptions in coulombs law equation modle

A

the charges are point charges, equivalent ions are the same

ke is constant in each medium

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14
Q

what is the net electrostatic force at equilibrium

A

0

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15
Q

how can you change the equilibrium position of the ions

A

introduce an external ion

change the medium

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16
Q

when does the maximum attraction between two oppositely charged ions occur

A

in a vacuum

17
Q

what is maximum ke

A

8.987 x 10^9 N m^2 C^-2

18
Q

equation for maximum attraction force

A

ke = 1/4piE0

19
Q

what is the symbol for permittivity of a vacuum

A

E0

20
Q

more accurate coulombs law equation

A

F1,2 = 1/4piE0 x modulus q1 x modulus q2 / r^2