Question
What is Bernoulli's theory for horizontal tube?

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Consider the circuit shown in figure:
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  2. Suppose the switch is again opened at t = 0. What is the time constant of the discharging circuit?
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Surface tension is exhibited by liquids due to force of attraction between molecules of the liquid. The surface tension decreases with increase in temperature and vanishes at boiling point. Given that the latent heat of vaporisation for water Lv = 540k cal kg-1, the mechanical equivalent of heat J = 4.2J cal-1, density of water $\rho_\text{w}=10^3\text{kg l}^{-1},$ Avagadro’s No NA = 6.0 × 1026k mole-1 and the molecular weight of water MA = 18kg for 1k mole.
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  2. Show that the inter–molecular distance for water is $\text{d}=\Big[\frac{\text{M}_\text{A}}{\text{N}_\text{A}}\times\frac{1}{\rho_\text{w}}\Big]^{\frac{1}{3}}$ and find its value.
  3. 1g of water in the vapor state at 1 atm occupies 1601cm3. Estimate the intermolecular distance at boiling point, in the vapour state.
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An ideal gas is kept in a long cylindrical vessel fitted with a frictionless piston of cross-sectional area 10cmand weight 1kg. The length of the gas column in the vessel is 20cm. The atmospheric pressure is 100kPa. The vessel is now taken into a spaceship revolving round the earth as a satellite. The air pressure in the spaceship is maintained at 100kPa. Find the length of the gas column in the cylinder.
If instead of mass, length and time as fundamental quantities, we choose velocity, acceleration and force as fundamental quantities and express their dimensions by V, A and F respectively, show that the dimensions of Young's modulus can be expressed as [FA2 V-4].
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Figure shows a straight, long wire carrying a current i and a rod of length l coplanar with the wire and perpendicular to it. The rod moves with a constant velocity v in a direction parallel to the wire. The distance of the wire from the centre of the rod is x. Find motional emf induced in the rod.