Chapter 1 Flashcards
How much do we know about the universe? (percentage)
4%
General physics is divided as
Mechanics and Properties of matter
Define Mechanics
The branch of physics known as mechanics is concerned with the investigation of motion under the influence of forces or displacements, as well as the subsequent consequences of the bodies on their surroundings.
What are the two branches of Mechanics?
Statistics and Dynamics
What are the two types of properties of matter?
General property and Special property
Examples of General properties
Weight, resistance, i cant translate the other two
Examples of Special properties of a solid material
Elasticity, rigidity, fragility etc
What is the special properties of a liquid
Viscosity, surface tension
What is the special properties of a gas
Viscosity
Describe Osmosis
Osmosis is a process by which the molecules of a solvent pass from a solution of low concentration to a solution of high concentration through a semi-permeable membrane.
Define Quasars
uasars are extremely powerful and distant active galactic nuclei
Define pulsars
Pulsars are highly magnetized rotating neutron stars
What are practical units
any of various electric and magnetic units selected for convenience as to size for use in actual practical measurements
Examples of practical units
kilometer and micron
Define light-year
the distance light travels in one year
What is the International proto-type meter
the distance between two lines on a standard bar of 90 percent platinum and 10 percent iridium
What is 1 astronomical unit in meters
1.495x10^8m
The distance of 1 light year in meters
9.46x10^15m
How many light years is 1 parsec
3.2616ly
1 fermi unit is equal to
10^-15 meter
1 X-ray unit is equal to
10^-11
Dimension of poisson’s ratio
none
Dimension of entropy
ML^2T^-2θ^-1
Dimension of temperature gradient
θL^-1
Unit of Self inductance
Henry(H)
unit of electric dipole moment
coulomb-meter(C.m)
Unit of capacitance
Farad(F)
coefficient of viscosity unit
Poise,
Nsm^-2 (Newton-second per square meter) ,
Pas^-1
Radius of gyration unit
m
In what year was the theory of relativity invented
1905
Who had a bird fetish and made a ship model based on it
Leonardo da vinci
which theories did archimedes invent
lever theory and Archimedes’ principle
What determines time’s unit (englishan’t)
Cs-133
who proposed a heliocentric system
Copernicus on deez nuts
Who’s the author of Philosophiae Naturalis Principia Mathematics
Isaac Newton
in what year was the Philosophiae Naturalis Principia Mathematics published
1687
What’s photon’s old name
Quanta
Who named quanta
max planck
In what year was quantum theory invented
1900
Einstein noble prize year
1921
