Kinematics Flashcards by Hanne Normann

Unit for conductivity?

S/m

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What is RC curcuit?

an electric circuit consisting of an ohmic resistor and a capcitor.

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Unit of electric charge (q)?

Coulomb (C)

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What is the unit for capacitance?

Farad (F)

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Electric dipole moment formula?

.p = q*d

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Velocity

delta s/delta t

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Unit for specific heat capacity

J/(kgK) or J/(kgC)

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1 mmHg is the same as..

133 Pa

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What is an electric field?

A Model for the interpretation of the electric interaction which helps to imagine how to bodies act on each other even if they are far away

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Eigeinfrequency (Natural frequency)

.f=(1/2pi)*square root of (k/m)

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What is resistivity (p)?

A constant, characteristic («specific») of the material of the conductor

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Unit for electric filed strength?

Newton/coulomb(N/C) og volt/meter (V/m)

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Newton´s second law

The acceleration of an object and the force acting on the object are proportional to each other

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How do we calculate capacitors in series?

1/C = 1/C1 + 1/C2 +…

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Energy

The ability of a system to perform work

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Newton`s second law

When viewed in an inertial reference frame, an object either remains at rest or continues to move linearly at a constant velocity, unless acted upon by a net force

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What kind of wave is light?

Transverse wave

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What is an equipotential surface?

The set of all points which have the same electric potential value. Electric field lines cross equipotential surfaces at a right angle at every point og the electric field

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Unit for resistivity?

Omega (UC) *m

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Hydrostatic pressure

P = phg

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Spring constant (unit)

N/m

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Acceleration

Delta v/delta t

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Ampere is the same as…

C/s

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Hooke´s law

F = -k*s

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Angular frequency

Omega = 2pi*f

What is Ohm´s law?

U = R*I

Formula for connecting resistors in parallel?

1/R = 1/R1 + 1/R2 +...

Newton`s third law

When object A exerts a force of F on object B, then object B exerts a force F on object B with equal magnitude but oppoite direction

Power

P = W/t

Joule is the same as..

N*m

What is capacitance?

The measure of the charge-storing ability of a capacitor which gives the charge stored in the capacitor if the voltage is 1 V

What is electric current?

The amount of charge passing through a given cross section of a conductor divided by the time elapsed

Force (unit)

Newton

What is the unit for electric ccurrent?

Ampere (A)

What is an electric conductor?

A material that contains charge carriers which can move freely

Voltage formula?

U = W/q

Mass-energy equivalence

E = m*c2

Unit of specific latent heat?

J/kg

1000 Kg/m3 is the same as..

1 g/cm3 or 1 kg/dm3

Heat required to change the temp of a body formula?

Q = c*m*delta T

What is a longitudinal wave?

The direction of oscillation is parallel to the direction propagation

How do you convert Kelvin to Celsius?

-273

Kinetic energy

E(kin) = 1/2(m*v2)

Potential energy

E(pot) = m*g*h

What is an insulator?

A material with no freely moving charge carriers

Ideal gas law?

.pV =vRT

Electric field strength formula?

E = F/q

Uniform circular motion

Phi= omega*t

Force

F= m*a

Definition of specific latent heat?

Amount of heat required to transform 1 kg of material from one phase to another

Energy (unit)

Joule, electronvolt or calorie

Unit for electric dipole moment?

Coulomb*meter (C*m) or debye (D)

Watt is the same as..

J/s

Formula for connecting resistors in series?

R = R1 + R2 +...

Unit for voltage?

Volt

Linear motion with uniform acceleration

.v= a*t+v0

Hertz is the same as..

1/s

Power (unit)

Watt

Angular velocity (unit)

1/s

Newton is the same as..

(kg*m)/s2

Heat capacity formula

C = Q/delta T

Density (unit)

Kg/m3

Formula for electric power?

P= U*I

1 bar is the same as..

10E5 Pa

Period (T)

Duration of one cycle in a repeating event

Period (unit)

Second

Ohm´s law for conductance?

I = G*U

What is a transverse wave?

The direction of oscillation is perpendicular to the direction of propagation

Angular frequency (unit)

1/s

Coulomb`s law?

F = k*(q1*q2)/r squared

Velocity of propagation?

.c=lambda*f

Farad is the same as...

C/V

Pressure

.p= F/A

Elementary charge?

1,6 E-19 C

Formula for Joule heating?

W = U*I*t

What is the formula for electric current?

I = delta q/delta t

Pressure (unit)

Pascal

Electric conductance formula?

G = 1/R

How do we calculate capacitors connected in parallel?

C = C1+C2+...

What is Inhomogenous electric field?

May have different strengths and direction in different points.

What is a homogenous electric field?

The force acting on the positive test charge has the same strength and direction at each point. They are parallel and density is uniform

Volt is the same as...

J/C

If more forces act on the object at the same time

Sum forces = m*a

Harmonic oscillation

.y=A*sin(omega*t*phase)

What is Snell`s law?

(Sin alfa/sin beta) = c1/c2

Specific latent heat formula?

L = Q/m

Density

.p = m/V

Specific conductance or conductivity formula?

sigma (LC) = 1/p

Average velocity

(V0+v)/2

Pascal is the same as..

N/m2

Velocity unit

.m/s

Formula for the capicitive reactance?

Xc = 1/(omega*C)

Calorie —> Joule

4,19

What is the formula for resistance of a conductor?

R = p*(l/A)

Specific heat capacity formula?

.c= C/m

Frequency

1/T

Capacitance formula?

C = q/U

What is an electric dipole?

Two charges of equal magnitude but opposite sign (+q and -q) at a given distance

Work (unit)

Joule

Electronvolt —> Joule

1,6*10E-19

What is the formula for energy stored in the capacitor?

W = 0,5 *C*U squared

Work

W = F*s

Distance

S=v*t

Capacitor formula?

U = E*d

Conservation of energy

E(kin)+E(pot)+E(elastic) = constant

What is a capacitor?

An electric component that is capable of storing electric charge and energy as well as creating homogenous electric field

Distance traveled during a time interval

.s= (average)v*t

Angular velocity

Omega = delta phi/delta t

Joule heating with Ohm´s law?

W = (Usqaured/R)*t

Ohm is the same as...

V/A

Acceleration (unit)

.m/s2

Unit of conductance?

Siemens (S)

Elastic potential energy

E(elastic) = 1/2*(k*s2)

Unit of heat capacity?

J/K

What is the unit for Ohm´s law?

Ohm (omega upper case)

How do you convert celsius to kelvin?

+273

Number of particles formula?

N = v*Na

What kind of wave is sound waves?

Longitudinal waves

What is electric current?

The collective motion of particles carrying electric charge

1 atm is the same as..

1,01E5 Pa

Electric power formula?

P= U*I