E-StoreImportant for units
17 Aug 2007 11:40:24 IST
Important for units
I think this will come in handy for you.As you never know when you are asked to calculate the unit of a variable.
Here is the order
PQ:Physical quantities.
SI:SI Units.
DF:Dimensional formula.
1.
PQ:Velocity = Displacement/Time
SI:m/s
DF:[M0L1T-1]
2.
PQ:Acceleration=Velocity/time
SI:m/s2
DF:[M0L1T-2]
3.
PQ:Force=mass*acceleration
SI:Kg-m/s2=Newton
DF:[MLT-2]
4.
PQ:Work=Force*Displacement
SI:Kg-m2/s2=N-m=Joule
DF:[ML2T-2]
5.
PQ:Energy
SI:Joule(J)
DF:[ML2T-2]
6.
PQ:Torque=Force*perpendicular distance
SI:N-m
DF:[ML2T-2]
7.
PQ:Power=Work*time
SI:J/s or watt
DF:[ML2T-3]
8.
PQ:Mommentum=mass*velocity
SI:Kg-m/s
DF:[MLT-1]
9.
PQ:Impulse=Force*time
SI:N-s
DF:[MLT-1]
10.
PQ:Angle=arc/radius
SI:radian
DF:[M0L0T0]
11.
PQ:Strain=dL/L or dV/V
SI:no units
DF:[M0L0T0]
12.
PQ:stress=Force*area
SI:N/m2
DF:[ML-1T-2]
13.
PQ:Pressure=Force*area
SI:N/m2
SF:[ML-1T-2]
14.
PQ:Modulus of elasticity=stress/strain
SI:N/m2
DF:[ML-1T-2]
15.
PQ:Frequency=1/Time period
SI:Hz(Hertz)
DF:[M0L0T-1]
16.
PQ:Angular velocity=angle/time
SI:rad/s
DF:[M0L0T-1]
17.
PQ:Moment of inertia=(mass)*(distance)2
SI:Kg-m2
DF:[ML2T0]
18.
PQ:Surface tension=Force/length
SI:N/m
DF:[ML0T-2]
19.
PQ:Gravitational constant=Force*(Distance)2/(mass)2
SI:N-m2/Kg2
DF:[M-1L3T-2]
20.
PQ:Angular momentum
SI:Kg-m2/s
DF:[ML2T-1]
21.
PQ:Coefficient of viscosity
SI:N-s/m2
DF:[ML-1T-1]
22.
PQ:Planck's Constant
SI:J-s
DF:[ML2T-1]
23.
PQ:Specific heat(s)
SI:J/Kg-K
DF:[L2T-2
-1]
-1]24.
PQ:Coefficient of thermal conductivity(K)
SI:watt/m-K
DF:[MLT-3-1]
-1]25.
PQ:Gas constant(R)
SI:J/mol-K
DF:[ML2T-2-1mol-1]
-1mol-1]26.
PQ:Boltzmann constant(k)
SI:J/K
DF:[ML2T-2-1]
-1]27.
PQ:Wein's Constant(b)
SI:m-K
DF:[L]
]28.
PQ:Stefan's constant(
)
)SI:watt/m2-K4
DF:[MT-3-4]
-4]29.
PQ:Electric charge
SI:C
DF:[AT]
30.
PQ:Electric Intensity
SI:N/C
DF:[MLT-3A-1]
31.
PQ:Electric Potential
SI:Volt
DF:[ML2T-3A-1]
32.
PQ:Capacitance
SI:farad
DF:[M-1L-2T4A2]
33.
PQ:Permittivity of free space
SI:C2N-1m-2
DF:[M-1L-3T4A2]
34.
PQ:Electric dipole moment
SI:C-m
DF:[LTA]
35.
PQ:Resistance
SI:Ohm
DF:[ML2T-3A-2]
36.
PQ:Magnetic Field
SI:Tesla(T) or weber/m2(Wb/m2)
DF:[MT-2A-1]
37.
PQ:Coefficient of self induction
SI:Henry
DF:[ML2T-2A-2]
Hope you find it useful.
plZ rate me if you find it useful.
Cheers!!!!!!!!!!!!!!
Comments (19)
SINDHURA KADIYALA
Blazing goIITian
Joined: 23 Apr 2007 18:54:45 IST
Posts: 341
17 Aug 2007 11:42:08 IST
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its great........
17 Aug 2007 15:32:34 IST
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that was really good........................!!!!!!!!
17 Aug 2007 16:27:01 IST
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very useful and important post
A rate for ur hard work
A rate for ur hard work
17 Aug 2007 17:25:07 IST
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Can one rememember all the formulae and can put it when asked without any mistake. NO doubt ur work is great.
But one must remember the formulae how it is derived.
But one must remember the formulae how it is derived.
17 Aug 2007 23:45:28 IST
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0 people liked this
awesome work dude
though im in 10 itll be very useful 2 me
though im in 10 itll be very useful 2 me
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