Unit and dimensions Flashcards
The prefixes of power of 10 are:
10^24 to 10^-24 :: Yotta, Zetta, Exa, Peta, Tera, Giga, Mega, Kilo, Hecto, Deca, Deci, Centi, Milli, Micro, Nano, Pico, Femto, Atto, Zepto, Yocto
mnemonic: yawning zebras expect promptness towards great magnanimous king; determined centaurs make messes. Nicely pushing feminism at zebras’ yearnings.
; (hecto and deca)
1 year has…….. seconds:
3.156 * 10^7 s
size of the nucleus of an atom is in the range of
10^-14 m
size of an atom is in the range of
10^-10 m
distance between the sun and the earth is in the range of
10^11 m
size of milky way galaxy is in the range of
10^21 m
dimensional formula of Boltzmann’s constant is:
joule/kelvin
Boltzmann’s constant has dimensional formula equal with:
entropy and thermal capacity
linear momentum has dimensional formula equal with
impulse
linear momentum has dimensional formula equal with
impulse
acceleration due to gravity is equal with in terms of : dimensional formula
gravitational field strength and acceleration
(e^2)/ $hc is : dimensional,time , length, mass, dimensionless?
dimensionless
1/ square root of mu and permittivity has dimensions equal with:
velocity = [LT^-1]
if the current in an electric bulb drops by one percentage the power decreases by:
2%
P = I^2R
deltaP/P = 2deltaI/I
angular momentum has its dimension equal to:
plank’s constant
