THEORY MASS AND ENERGY 1

is a process that consists in comparing an unknown magnitude with another already known in the same unit of measure.

is completely specified by magnitude and direction.

is the length of path traveled by a light wave in a vacuum in a time interval of 1/299

Is the travelled distance per unit of time. It is a scalar quantity.

Is the length of the real path followed by an object. It only has magnitude so it’s a scalar quantity.

Is the difference between the real value of a magnitude and the measured value.

is the time needed for 9 192 631 770 vibrations of a cesium atom

is considered one of the greatest mathematicians of the ancient times. He was one of the first to apply math to physical

formulated the electromagnetic theory that unifies the concepts of electricity and magnetism known to that time.

developed the theory of relativity, discovered the photoelectric effect and did contributions to the quantum theory.

Means that the unknown magnitude is measured through mathematical calculations, performed with quantities

a physical quantity is defined with a number and a unit of measure. For example: 20 meters, 40 liters, etc

is the unit of mass and it is equal to the mass of the international prototype of kilogram.

Is the displacement per unit of time. It is a vector quantity.

Caused due to imperfect calibration of the measurement instrument. It is very frequent.

is a particular physical quantity which is used to compare other quantities of the same kind to show their value.

Some quantities can be described only by its number and a unit.

Means that the unknown magnitude is measured with an instrument of the same magnitude.

is considered as the father of modern Physics. His experiments and studies of the motion of bodies

Is the fraction resulting from the ratio of the absolute error, it is usually expressed as a percentage.

who tried to stablish general principles that ruled the behavior of natural bodies, both living and inanimate?

is quantifiable or assignable property that is linked to a phenomenon, body or substance

stablished motion laws that now they have his last name and also the universal gravitation principles.

is the graphical representation of a vector quantity.

Occurs when the magnitude varies randomly. It is difficult to anticipate and not very common.

separation in a straight line between two points, the final and initial position, and it goes into a precise direction.

is a permanent physical record, or easy to determine, of the quantity that implies a particular measurement unit.