Explain conservation of mechanical energy. Explain work and the work–energy theo

Question

Explain conservation of mechanical energy.
Explain work and the work–energy theorem.
What are the formulas for Newton’s law of universal gravitation and Coulomb’s law.
Fomula to Calculate pressure and force.
Formula for density, buoyancy, and pressure due to a fluid.
What is the ideal gas law.
What are the laws of thermodynamics
What is linear expansion.
Regarding current, resistance, and voltage:
Apply Ohm’s law.
Explain the properties and differences between series and parallel circuits.
What are basic calculations involving transformers output

Explanation / Answer

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law of conservation of energy = total energy of the system will always remains constant

i.e energy can neither be created nor destroyed

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work energy theorm states that the net amount of Work dione = change in it energy

W = Kf- Ki

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Newtons law of Gravitation for force between the masses is given by

the formula F = Gm1m2/r^2

where G is universalgravitational constant = 6.67 e -11 Nm^2/kg^2

m1, m2 are the masses

r is the distance bbetween the masses

Couloumbs law for force between the charges is given by

F = Kq1q2/r^2

K is permittivity constant = 9e9

q1,q2 are the charges

r is the distance between the charge

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density = mass/volume

buoyance = F = rho Vg

Pressure = P = force/area = F/A
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ideal gas = PV = nRT

where P is pressure

R Rydberg constant

T is temperature

V is Volume

n is no. of moles

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I laW of Thermodynamics : dQ = dU + dW

dQ , heat liberated

dU = imternal energy

dW = net work done

II law of TD: = it is impossible to transer heat from cold bodt to Hot body

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linear expansion is the ration of change in length to that of original,length

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Current = Charge/time

Resisatnce R = rhoL/A

where rho is resistivity

L is length

A is area

Voltage is the aamount of Work done per charge

V = W/q

ohms law = V = IR

where I is current and R is resistance

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is series combintion , one end terminal is connected to another end terminals and it goes o

in parallel comnbination, all one end terminals are connected to one side and all other end terminals are connected to

aonther end

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Apply in a transforner

Ns/Np = Vs/Vp = Is/Ip

where NS ans Np are seconda dr and primary tunrs

Vs and Vp are secondary and primary volatges

Is and Ip are secondary and prianry currents

also in ideal tansformer output P = input P

so VsIs = VpIp

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