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A gas bubble oscillate with a time period T proportional to p,d,e where p is preesure , d is density and e is energy. Find the valve of t.
Posted by Hemant Singh (Aug 19, 2017 11:05 a.m.) (Question ID: 13374)

• Given {tex}T = k p^a d^b E^c{/tex}

where k is a proportionally constant.
Substituting the dimensions of T, p, d and E,
we have
{tex} [T] = [[ML^{-1}T^{-2}]^ a [ML^{-3}]^ b [ML^2T^{ -2}]^ c {/tex}

Equating power of M, L, and T on both sides, we have
a + b + c = 0
–a –3b + 2c = 0
–2a – 2c = 1
Solving these equations, we get {tex}a = {-5\over 6}, \ b = {1\over 2} \ and \ c ={ 1\over 3}{/tex}

Answered by Naveen Sharma (Aug 19, 2017 12:01 p.m.)
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What is pen cell
Posted by Monu Yadav (Aug 19, 2017 12:18 a.m.) (Question ID: 13255)

• the nucleus formed by the fusion of two polar nuclei in the embryo sac of a seed plant prior to fertilization —called also secondary nucleus

Answered by Himanshu Singhal (Aug 19, 2017 8:51 a.m.)
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1/2-1/3
Posted by Zahiruddin Babar Khan (Aug 18, 2017 7:47 p.m.) (Question ID: 12979)

Where can i find study material for jee mains
Posted by Chirag Sharma (Aug 17, 2017 10:05 p.m.) (Question ID: 12534)

Mcq
Posted by Santhosh Santhosh (Aug 17, 2017 9:23 p.m.) (Question ID: 12481)

Vector
Posted by Xavier Pradhan (Aug 17, 2017 5:13 p.m.) (Question ID: 12187)

For a ce transstor amplifier, the audio signal voltage across the collector of 2kohm is2v. current amplification factor is 100 .what should be value of Rb in series with Vbb suply of 2v if the dc base current has to be 10 times the signal current. Also calculate the dc drop across the collector resistance. Vbe= 0.6v
Posted by Bighnesh Pradhan (Aug 17, 2017 5:09 p.m.) (Question ID: 12184)

What is thermodynamics
Posted by Rishabh Raj (Aug 17, 2017 12:42 p.m.) (Question ID: 12061)

• The branch of chemistry /physics which deals with heat change in system to surrounding called thermodynamics

Answered by Soumya Ghoshal (Aug 17, 2017 1:27 p.m.)
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What is bronchial
Posted by Saimi Rathore (Aug 15, 2017 2:38 p.m.) (Question ID: 10974)

• Bronchial is a part of lungs which help us for purification of o molecules in air
Posted by Monu Yadav (Aug 19, 2017 12:17 a.m.)
• Bronchial here refers to relation with bronchi or bronchioles.

Individuals suffer rom various bronchial diseases such as Bronchitis, Bronchiolitis etc.

Answered by Viplov Nirala (Aug 15, 2017 6:26 p.m.)
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Wavelength of light in air is 5000A. U. Find number of light waves passing through 3mm thick glass plate of refractive index 1.5
Posted by Panchal Srushti (Aug 15, 2017 1:09 p.m.) (Question ID: 10919)

Only syllabus is given study material is not there
Posted by Muhd Umar Ansari (Aug 15, 2017 10:57 a.m.) (Question ID: 10850)

The graph between F and r for equation F = GMm/r2
Posted by Anmol Rattan (Aug 14, 2017 10:45 p.m.) (Question ID: 10723)

Why lithium is strongest reducing.agent and caesium is not
Posted by Manju Malik (Aug 14, 2017 4:25 p.m.) (Question ID: 10474)

Give The deffinition of cross product
Posted by Vineet Kumar (Aug 13, 2017 6:24 p.m.) (Question ID: 10008)

What is measles cylinder
Posted by Geet Mehra (Aug 13, 2017 4:28 p.m.) (Question ID: 9937)

• Cell
Posted by Talib Khab (Aug 14, 2017 9:55 p.m.)
For the reaction R-P the concentration of a reactant changes from 0.05 M to 0.04 M in 30 min . What will be the average rate of reaction in minutes?
Posted by Goswamy Ajan Singh (Aug 13, 2017 6:10 a.m.) (Question ID: 9545)

why value of trigonometric sine is positive in second quadrant
Posted by Anurag Kumar (Aug 12, 2017 10:16 p.m.) (Question ID: 9479)

• Because sine is p/h and if you will prepare a right triangle in second quadrant then only base will be in negative x otherwise both perpendicular and hypotenuse will be positive so sine and cosec are positive in second quadrant..

Posted by Neeraj Kumar Sharma (Aug 19, 2017 1 a.m.)
• Because only sine and cosine will positive on 2nd quadrant
Answered by Khan Israil (Aug 17, 2017 12:06 p.m.)
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• Because all are positive in 2nd quadrant
Answered by Anshul Gupta (Aug 16, 2017 5:27 p.m.)
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why trigonometric ratio are not change at an angle 180 and 360 but they change at 90 and 270
Posted by Anurag Kumar (Aug 12, 2017 10:13 p.m.) (Question ID: 9476)

• Because at odd no of 90 x axis is changed by y axis and vice versa but at even no the axis is not changed just +Ive axis changed to negative and vice versa

Posted by Neeraj Kumar Sharma (Aug 19, 2017 1:01 a.m.)
why molecularity of a reaction can not be more than 3
Posted by Anurag Kumar (Aug 12, 2017 10:05 p.m.) (Question ID: 9471)

What is Dulong and petit law
Posted by Lokesh Suthar (Aug 12, 2017 11:58 a.m.) (Question ID: 9078)

Dimension of angular velocity.
Posted by Ankit Verma (Aug 12, 2017 1:28 a.m.) (Question ID: 8962)

• T-1
Answered by Arya Ravi (Aug 12, 2017 8:34 p.m.)
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• T-2
Answered by Arya Ravi (Aug 12, 2017 8:34 p.m.)
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Diffusion
Posted by Brijesh Sharma (Aug 12, 2017 1:04 a.m.) (Question ID: 8961)

• Diffusion is the movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. A good example of diffusion is food colouring.

Answered by Anurag Chauhan (Aug 18, 2017 11:10 p.m.)
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What is magnet?
Posted by Mr Raj Chandravanshi (Aug 11, 2017 7:58 p.m.) (Question ID: 8788)

What is rule of 35-A
Posted by Mr Raj Chandravanshi (Aug 11, 2017 7:55 p.m.) (Question ID: 8783)

What is primitive
Posted by Prateek Agarwal (Aug 11, 2017 7:20 p.m.) (Question ID: 8754)

• It is the integration..
Posted by Prateek Agarwal (Aug 11, 2017 7:21 p.m.)
Equilibrium
Posted by Anupama Singh (Aug 11, 2017 7:06 p.m.) (Question ID: 8740)

What is physic
Posted by Upajit Gayary (Aug 11, 2017 4:43 p.m.) (Question ID: 8664)

• Physics is the branch of science which deals with the study of environment and natural phenomenon.
Answered by Rinku Sharma (Aug 12, 2017 8:21 a.m.)
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• Physics is the natural science that involves the study of matter and its motion and behavior through space and time, along with related concepts such as energy and force.

Answered by Ashutosh Kumar (Aug 11, 2017 5:37 p.m.)
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EC=
Posted by Vinod Rawat (Aug 11, 2017 5:54 a.m.) (Question ID: 8507)

Young's modulus steel and coper are equal are not
Posted by Kashi N (Aug 10, 2017 11:01 p.m.) (Question ID: 8464)

Out of c and co which is a better reducing agent for zno
Posted by Guddu Guddu (Aug 10, 2017 10:49 p.m.) (Question ID: 8459)