Housing and Urban Development Laws and AgenciesFull description
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ECE Laws, obligations and Contracts
Debit and CreditFull description
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LAW OF INERTIA
“Bodies exper “Bodies experiencin iencing g balan balanced ced forces will not move, else they will move with constant velocity” •
LAW OF ACCELERATION
“The sum of all unbalanced forced acting on a body is propor pro portio tional nal to the acce acceler lerati ation on exp experi erienc enced ed by the body” •
LAW OF INTERACTION
“When a body exerts a force on another body, the other body exerts a force that is equal in magnitude as the first but has an opposite direction” •
LAW OF CONSERVATION OF ENERGY
“The tot “The total al amo amount unt of ene energy rgy in an iso isolat lated ed sys system tem remains constant” •
IMPULSE-MOMENTUM THEOREM
“An impulse may also be regarded as the change in momentum of an object to which f orce is applied” •
THE LAW OF CONSERVATION OF MOMENTUM
“The total momentum of any group of objects remains the same unless outside forces acts on objects” •
UNIVERSAL LAW OF GRAVITATION
“The force of attraction between a pair of objects in the universe is directly proportional to the product of their masses but is inversely proportional to the square of the separation” •
LAW OF ELLIPSES
“Plane “Pla nets ts fo foll llow ow op opti tica call or orbi bits ts wi with th th the e su sun n on on one e focus.” •
LAW OF AREAS
“The line joining the sun and any one of the planets will sweep out equal areas in equal times” •
LAW OF PERIODS
“The period of revolu revolution tion of a planet is propor proportiona tionall to the 3/2 powers of the distance between the planet and the sun.” •
PASCAL’S PRINCIPLE
“A change in pressure of an enclosed incompressible fluid is conveyed undiminished to every part of the fluid and to the surfaces of its c ontainer” •
“The energy associated with the work done by the net force does not disappear after the net force is removed (or becomes zero), it is transformed transformed into the Kinetic Energy of the body.”
ARCHIMEDES’ PRINCIPLE
“The magnitude of the upward force, buoyant force, is equal to the weight of the displaced volume of fluid”
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TORRICELLI’S LAW
“The speed of efflux of a fluid through a sharp-edged
hole at the bottom of a tank filled to a depth is the same as the speed that a body (in this case a drop of water) would acquire in falling freely from a height.” •
ZEROTH LAW OF THERMODYNAMICS
“If A is in thermodynamic equilibrium as B, and if B is in thermodynam ic ic e qu quilibrium as C, the n A is thermodynamic equilibrium as C.” •
FIRST LAW OF THERMODYNAMICS
“Energy can neither be created nor destroyed. It can only change forms. In any process, the total energy of the universe remains the same.” •
SECOND LAW OF THERMODYNAMICS
“The entropy of an isolated system not in equilibrium will wi ll te tend nd to in incr crea ease se ov over er ti time me,, ap appr proa oach chin ing g a maximum value at equilibrium.”
PARTICLE THEORY OF LIGHT
“Light is made up of little particles.” “They obey the same laws of physics as other masses like baseballs and planets.” “They are tiny so the particles in two intersecting beams do not scatter off each other.” •
QUANTUM THEORY OF LIGHT
“Both light and matter consists of tiny particles which have wavelike properties associated with them” HOOKE’S LAW “Stress is directly proportional to strain, but ONLY up to •
a limit called the proportionality constant” •
SNELL’S LAW
“The ratio of the Sines of the angles of incidence and of refraction is a constant that depends on the media” •
OHM’S LAW
“The law of physics that states that electric current is dire di rect ctly ly pr prop opor orti tion onal al to th the e vo volt ltag age e ap appl plie ied d to a cond co nduc ucto torr and an d inve in vers rsel ely y pro rop por orttio iona nall to th that at conductor's resistance” •
COULOMB’S LAW
“a law of electr electricity icity stating stating that the force of attraction or re rep pul ulsi sion on bet etw wee een n tw two o el elec ecttri ric c ch cha arg rges es is proportional to their product and inversely proportional to the square of the distance between them” them” LAW OF INDUCTION “ The induced electromotive force or EMF in any closed •
circui circ uitt is equal equal to th the e ti time me ra rate te of ch chan ange ge of th the e magnetic flux through the circuit.” •
PRINCIPLES OF SPECIAL RELATIVITY
1. Th The e la laws ws of na natu ture re ar are e va vali lid d in iner erti tial al fr fram ames es of reference 2. The speed of light is constant for all observers in inertial frames of reference. There cannot be a speed greater that the speed of light. LAW LA W ENERGY •
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LENZ’S LAW
"The Induced current is such as to OPPOSE the CHARGE in applied field."
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CONS NSE ERV RVAT ATIO ION N
OF
THE TH ERM RMAL AL
“The amount of thermal energy that an object gives off to the other object is equal to the thermal energy that the other object receives.” •
LAW OF CONSERVATION OF CHARGE
“The number of electron loss in a body is equal to the amount amo unt of the electrons electrons gained by the other object object close to the first.” •
PRINCIPLE OF SIMULTANEITY
“Events that are simultaneous in an inertial frame of referen ref erence ce are not sim simult ultane aneous ous in ano anothe therr fram frame e of reference. •
FUNDAMENTAL LAW OF NATURE
“Like charges repel, unlike charges attract.” •
LAW OF SUPERPOSITION
“Two or more waves combine to form a new one.” •
THIRD LAW OF THERMODYNAMICS
“As temperature approaches absolute zero, the entropy of a system approaches a constant minimum.” •
WORK-ENERGY THEOREM
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LAW OF REFLECTION
“The an “The angl gle e of re refl flect ectio ion n is eq equa uall to th the e an angl gle e of incidence”
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PRINCIPLE OF A SPRING
“The force exerted by the spring is always opposite to the external force that acts on it.” •
BERNOULLI’S PRINCIPLE
“a law in physics whereby the sum of the pressure and the product of one half of the density times the velocity squared is constant along a streamline for steady flow in an inc incomp ompres ressib sible le non nonvis viscou cous s flu fluid id at con consta stant nt height.”
