FORMULAS AND UNITS

Some basic physics units 

Serial No.	PHYSICAL   QUANTITIES	UNITS
1.	Length	Meter
2.	Mass	Kilogram
3.	Time	Second
4.	Area	m2
5.	Volume	m3
6.	Density	Kg/m3
7.	Current	Ampere
8.	Temperature	Kelvin
9.	Velocity	m/s
10.	Momentum	Kg m/s
11.	Force	Newton
12.	Pressure	Pascal
13.	Power	Watt
14.	Energy	Joule
15.	Frequency	Hertz
16.	Charge	Coulomb
17.	Resistance	Ohm
18.	Acceleration	m/s2
19.	Self-inductance	Henry
20.	Luminous Intensity	Candela

MULTIPLE AND SUBMULTIPLE FACTORS

PREFIX	SYMBOL	MULTIPLYING FACTORS
Deci	d	10-1
Centi	c	10-2
Milli	m	10-3
Micro	µ	10-6
Nano	n	10-9
Pico	p	10-12
Femto	f	10-15
Atto	a	10-18
Deca	da	101
Hecto	h	102
kilo	k	103
Mega	M	106
Giga	G	108
Tera	T	1012
Peta	P	1015
Exa	E	1018

Surface tension of liquids

S.No	Liquids	Surface tension Î 103 Nm -1
1	Water	67.2
2	Gingelly oil	25.9
3	Sunflower oil	35.51
4	Milk	46.86
5	Benzene	27.11
6	Ethyl Alcohol	16.94

Density of liquids

S.No	Liquids	Density
1	Water	1 Î 103 kg /m3
2	Gingelly oil	0.938 Î 103 kg /m3
3	Sunflower oil	1.056 Î 103 kg /m3
4	Milk	0.94 Î 103 kg /m3
5	Benzene	0.7 Î 103 kg /m3
6	Ethyl Alcohol	0.866 Î 103 kg /m3