a rod of mass M and length L has moment of inertia,I=ML2/12
but it is only for a thin rod
here the rod is a line passing through centers of disks,it's M.I constitute only small part of total M.I of the arrangement
here,the moment of inertia the arrangement is comparable to the M.I of a rod of...
i think charges will go to the surfaces
if there is excess charge(suppose +ve) inside the metallic sphere in static situation it will produce electric field.then free electrones move to the +ve charge to neutralize it.movement of free electrones cause +ve charge somewhere else.ie,the metallic...
sir I have a doubt why component of gravitational force doesn't matter here when tap is at an angle
considering a fluid part it has 2 forces on it 1 by the pressure or weight created by fluid part above it and gravitational force on it.
please coeerct me if I am wrong
the rotation of body3 also influence the centrifugal force on the cursor and distance it moved against spring force
when body3' z3 axis become parallel to z2 axis total mass=m2+m3 cursor moves x distance from equilibrium position where kx=(m2+m3)(a+x)(theeta point)^2
when body3 moves 90degrree...
How nCvΔT will equal to W.It is the heat absorbed/released at constant volume only(no work is done at constant volume,the expression
Cv).i think instead of work it is heat,ie ΔU=ΔH=qv at constant volume and ΔH=qp at constant pressuer
actually it is the proof for Cp-Cv=R
you said ΔU for a reaction is caused by the bond dissociation and formation.
i want to know more about it(why here T remains same)
why in phase change also T remains constant(if there isn't any kinetic energy change if solid/liquid→gas and vice-versa that cause T difference)
then what cause ΔU
yeah I get you.
so for a isothermal reaction process ΔU is the energy used for bond dissociation,formation,etc.the excess heat will removed sometimes by doing a work.
1.I heard phase transformation is a isothermal process what about ΔU?
2.what is difference b/w ΔU in isothemall process and not...
in your post the T is constant so the supplied heat must be fully use to do work so the in U from constant V to that P will be zero
so overall change will be ΔU
But here the reaction takes place at constant V not at constant P.(we add or remove heat after the reaction)
You may think this, but it is not correct. Have you considered the amount of energy involved in making and breaking chemical bonds? When chemical reactions occur, this affects ΔU and ΔH. If an exothermic reaction occurs at constant pressure and temperature, ΔH is negative, and heat must be...
but how in a chemical reaction(in general) the amount of mass change(since U changes when 1.heat passes 2.work done 3.matter enters or leaves ) it will violate the law of mass conservation.
i think if a reaction takes place at constant T the heat evolved(ΔH) must fully use for doing...
In my text it was said that ΔH=ΔU+ΔnRT
Δn:n of gaseous products-gaseous reactents
they use ΔnRT instead of Δ(PV),here T is constant⇒U is a constant(U is a function of temperature)
then why didn't the term ΔU became zero?
what is the actual equation?is it is...
if a central force acts on a sphere it will rotate and move and also a angular momentum is given to that body it will also move in the same manner.What provide torque in first case and net force in second case.is it friction then how?
we have tension=(2Mm)g/M+m,but the acceleration of the system is a=F/(M+m)-g.The system has a psudo force acting in the bodies and
acceleration of larger body,M=Mg-(2Mm)F/(M+m)^2