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haridas_mandal:
At a given instant of time the position vector of a particle moving with a velocity 3i4j+5k is i+9j8k. Its angular velocity is ..
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haridas_mandal:
At a given instant the position vector of a particle moving with a velocity 3i4j+5k is i+9j8k. Its angular velocity is..
 updated one year ago
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haridas_mandal:
A block of mass m is connected to one end of a spring ( k) . The other end is fixed to a rigid support. The mass is then releases slowly so …
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haridas_mandal:
Two persons A &B are located at points (0,0) & (o,10) respectively. At a time t =0 they strat simultaneously with velocity Va=2j m /sec & 2i…
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haridas_mandal:
200ml of 0.1 M Acetic acid is mixed with 50 ml of Potassium acetate. K(alpha) of acetic acid is 1.8 x10^5at 27 degree Centigrade. Concentra…
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haridas_mandal:
I am finding it difficult to get the right hand rule applied to motion of a charged particle in a magnetic field..assuming uniform magnetic …
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haridas_mandal:
'm' grams of a gas of a molecular weight M is flowing in an isolated tube with velocity V. If the flow of the gas is suddenly stopped the ri…
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haridas_mandal:
An ideal gas is subjected to a cyclic process ABCD as depicted in the PV diagram given. Which of the following curves represents the equiva…
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haridas_mandal:
Can anyone find some authentic comparison of Gotras of each and every human beings born into Hindu family to that of any other religion of t…
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haridas_mandal:
A parallel plate capacitor fitted with a material of dielectric constant 'k' is charged to a certain voltage. The dielectric material remove…
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haridas_mandal:
A small pendulum with time period T inside a car which is moving in a circle with a radius R and a velocity V . What would be the change i…
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haridas_mandal:
After watching documentary on Stone Hedge where a very large roundel shape created by the ancient people with large stones vertically erecte…
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haridas_mandal:
The equation of a stationary wave in a string is Y = 4 mm sin [(3.14m^1)x] cos wt. Select the correct alternatives:a) The amplitude of comp…
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 17 replies
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haridas_mandal:
Consider the two statements :
Statement A : Frictional Force can be zero even though the contact surface is rough.
Statement B : Even thou…
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haridas_mandal:
Statement AEnergy is the cause and work is the effect.
Statement twoEnergy is a scalar but work is a vector product
Optionsa) Both A, B…
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haridas_mandal:
A particle of mass 'm' moving with a speed v hits elastically another stationary particle of mass '2m' on a smooth horizontal circular tube …
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haridas_mandal:
When a heat Q is supplied to 1 mole of a monoatomic gas (y=5/3)the work done by the gas is (Q/3). Then the molar heat capacity of the gas is…
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haridas_mandal:
A cylindrical tube of uniform cross sectional area A is fitted with two air tight frictionless pistons. The pistons are connected to each ot…
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haridas_mandal:
Atank of height 5 m is full of water. There is a hole of cross sectional area 1 cm2 in the bottom. The volume of water that will come out fr…
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 4 replies
 1 Medal

haridas_mandal:
one gm of water ( volume 1 cm3) becomes 1671 cm3 of steam when boiled at a pressure of one atmosphere. The latent heat of vaporisation is 54…
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haridas_mandal:
A vessel has 6 kg of Hydrogen at pressure 'p' and temp '500K'. A small hole is made in it so that hydrogen leaks out . How much hydrogen lea…
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 19 replies
 2 Medals

haridas_mandal:
two glass bulbs A &B of volume V , 2V respectively are connected by a narrow capilary tube. The bulbs contain gas at temp T and Pr P. Now th…
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 7 replies
 1 Medal

haridas_mandal:
A ball of mass 'm" is thrown vertically upward from the ground and reaches a 'h' before momentarily coming to rest. If 'g' is acceleration d…
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haridas_mandal:
Need help"
Question:An object may have
i0 Varying speed without having varying velocity
…
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 2 replies
 1 Medal

haridas_mandal:
A 20kg body is connected to a rope of breaking strength 40 kgwt. If it is moved down with a speed of 9.5m/s at certain instant. The shortest…
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haridas_mandal:
transmission of heat problem .pl help
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haridas_mandal:
In the given figure all the surfaces are smooth. The ratio of forces exerted by the wedge on the mass M WHEN F is not applied and when the f…
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 17 replies
 1 Medal

haridas_mandal:
A man of mass 60 kg is standing on a weighing m/c kept in box of mass 30 kg which is hanging from a pulley with one end of the rope fixed to…
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haridas_mandal:
A simple pendulum suspended to the ceiling of a moving car on a horizontal road is aligned at 27 degree with the vertical. If it started fro…
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haridas_mandal:
A goes Eastward at 5 m/s .In ten seconds he goes North with 5 m/s. What's the average acceleration?
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