Measurement And Units Flashcards
The unit of distance used to measure astronomical object outside the solar system
Parsec
1 kilogram is the mass of a particular international prototype cylinder made of platinum - iridium alloy kept at
International bureau of weight and measures at sevres france
To measure small distance such as distance between two atoms in a molecule size of the nucleus and wavelength etc. we use multiple of ten. this quantities are measured in
Angstrom 10^-10m
Fermi 10^-15 m
Mass of a proton neutron and electron can be determined using
amu
1 AM is equal to 1/12 th of the mass of c12 atom
The temperature at which saturated water vapour, pure water and melting ices are in equilibrium
Triple point of water
Zero kelvin is commonly known as
Absolute zero
________is The fraction of 1 by 273.16 of thermodynamic temperature of the triple point of water
One Kelvin
Diameter of nucleus
Distance between two stars
10^-15 m
10^26 m
Mass of electron
Mass of the Milky way galaxy
9.1 1 10^-31 g
2.210^41 kg
Vernier caliper we can have an accuracy of
0.1 mm
Screw gauge we can have an accuracy of
0.01mm
Screw gauge is an instrument that can measure the dimension up to
1/100th of a millimetres or 0.01mm
Common balance
5g
Physical and digital balance
10mg
Spring balance works by
Hookes law
