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somyekathait

sin^-x + cos^-x =

/2

somyekathait

sin^-x + cos^-x =

/2

lavishagupta

PV = nRT

somyekathait

in a GP

sum of n terms =a(1-rⁿ)/ (1-r)

= (a-arⁿ) / (1-r)

= (a-ar^n-1 r) / (1-r)

= (a-rT_n) /(1-r) Tn = nth term , r= common ratio

HENCE sum = ( a-rT_n) / (1-r)

Nithy

let me see.........gaseous state

most probable velocity = ^{[ ]}

2RT/M

average velocity = ^{[ ]}

8RT/pi M.

Nithy

crtitial temperature = 8a / 27Rb
critical pressure = a/ 27b^2

Vc critical volume = 3b

ganesha1991

The amplitude of the reflected wave is [ (c2 - c1 ) / (c1 + c2 ) ]Ai and the
amplitude of transmitted wave is At = Ai [ 2c2 / (c1 + c2 )].
Ai = amplitude of incident wave in first medium
c1 = speed of wave in first medium
c2 = speed of wave in second medium

Taara

k.e = 3/2KT

deedee

Cv=R/gamma-1

Cp-Cv=R

for a mono atomc gas

Cv=3/2R

diaatomic

Cv=5/2R

poly atomic

(3n-3)R

janvi

impedance of an lcr circuit is

Z^2=R^2+(XL-XC)^2

Z-impedance

R-resistane

XL-inductance

XC-capacitance.

swati.07

Motion of a charged particle in uniform mag field

qvB = mv^2/r

r = mv/qB

Time period ; T = 2(pi)r/v

= 2(pi)m / qB

Frequency of revolution is

V = 1/ T = qB / 2(pi)m

dheer_07

i= dq\dt

now rate me!!

swati.07

Dist between two coherent sources is given by :

d = 2a(

-1)

where a = dist between the source & the prism

= refractive index of the prism with respect to surrounding medium

= refractive angle of each prism in radians

K4FECN6

If z1,z2 are 2 complex nos.,the locus of point P(z) describes

1.an ELLIPSE if |z-z1|+|z-z2|=2a where 2a>|z1-z2|

2.a HYPERBOLA if |z-z1|-|z-z2|=2a where 2a<|z1-z2|

3.a CIRCLE if (|z-z1|/|z-z2|)=k if k is not equal to 1

4.a STRAIGHT LINE if (|z-z1|/|z-z2|)=1.

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