Recent content by paragchitnis

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    Mesh analysis in non-planar circuits

    How to solve non planar circuits using mesh analysis? Is it possible or not?
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    Calculate the work done in polyatomic gas

    I think PV\gamma= constant is applicable for adiabatic reversible processes only. It is irreversible process..
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    Calculate the work done in polyatomic gas

    Homework Statement Calculate the work done by the system in an irreversible (single step) adiabatic expansion of 2 moles of a polyatomic gas (\gamma = 4/3) from 300K and pressure 10 atm to 1 atm. Homework Equations Work done in adiabatic process W = nCv\DeltaT...
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    Undergrad State functions in thermodynamics

    The terms internal energy, enthalpy, entropy are state functions. Are change in internal energy(\DeltaU or \DeltaE),change in enthalpy(\DeltaH) and change in entropy(\DeltaS) state functions?
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    Undergrad Rolling Motion on Rough Surfaces

    Friction is necessary to make motion rolling but if the body is already in rolling motion on rough surface without slipping then, is friction necessary to continue the rolling motion ?
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    Graduate Coordinate System: Rotating 2D & 3D Axes & Impact on Directed Cosines

    Co-ordinate axes can be drawn on plane or in space. In case of plane geometry (2D-geometry) the two axes, X-axis and Y-axis, can be rotated through some angle. For this transformation of axes we get the relation between the co-ordinates of a point in old and new system. Is this transformation is...
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    High School Why Does Water Expand on Heating/Cooling?

    Generally, a substance expand on heating.But water expand on cooling below 40c(277K) to 00c(273K). It also expands on heating above 40c.Why?
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    A Projectile motion problem, I .

    Find the horizontal distance where the two bodies collide by solving there equations. From this, you can get time of flight of two bodies from projection to collision and what you need..?
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    Calculating Angular Velocity of a Shell Exiting a Barrel | Physics Homework

    Time is not given. But let us consider it take ts for n = 2 turns. can we get the answer in terms of t?
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    Why is Momentum Not Conserved in a Ball of Clay Colliding with a Wall?

    Here we are considering a system of two bodies i.e. a wall and the clay ball. If we consider the motion of the earth, the system will be changed. Momentum will be conserved only if there is no external force acting on the system. The force may be small or large, tangentially or normally, if it...
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    Finding Mean Angular Velocity of Rotating Body

    Homework Statement A solid body rotates with deceleration about a stationary axis with an angular deceleration \beta \propto \sqrt{\varpi} , where \varpi is the angular velocity. Find the mean angular velocity of the body averaged over the whole time of the rotation if at the initial moment...
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    Calculating Angular Velocity of a Shell Exiting a Barrel | Physics Homework

    Homework Statement A shell acquires the initial velocity v = 320m/s, having made n = 2.0 turns inside the barrel whose length is equal to l = 2.0m. Assuming that the shell moves inside the barrel with uniform acceleration, find the angular velocity of its axial rotation at the moment when the...
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    Why is Momentum Not Conserved in a Ball of Clay Colliding with a Wall?

    I think, Law of conservation of momentum is only applied when 1. There is no external force acting on the bodies 2. The bodies in the system are rigid The clay ball is not rigid and stick to wall. Here total energy of the system is conserved but the total momentum is not.
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    Understanding Empirical Formulas & Ions: 2 Questions Answered

    Formation of cation or anion does not depends on the number of electrons in atom. As Ba is metal it has property to lose electron. It will form cation while P is non-metal is accept electron. It will form anion.