Recent content by harsh_sinha

Instantaneous centre method can be used in any problem. But both methods give the same result. Maybe there's some problem with the signs like mfb said.

Linear momentum of a system remains conserved if no external force is acting on the system. This is just the general form of conservation of linear momentum. Suppose external force ia acting along x-axis then linear momentum along y and z axis will remain conserved.The effect of force can only...

You can simply use equation of continuity. Check if your equation is dimensionally correct.

Bohr's model is not applicable for He atom.Besides if we use this equation to calculate IP2 then the result would be twice of the actual value. It would be great if you share the source of this equation.

He+ is a hydrogen like species as it has one electron.So Bohr's model is applicable on it.

An ideal ammeter can simply be replaced by no resistance wire for solving circuit related problems .Replace the ammeter by no resistance wire and then try to solve it.

Battery is like a pumping device. It pumps charge.When connected to a capacitor it pumps charge till steady state is achieved.In steady state when there is no flow of charge we can easily prove that potential difference across the capacitor is constant using Kirchoff's Law.

Plot v-t curve for t<4.It would be a parabola open downward.Velocity is maximum at maxima of the curve.Maybe now you can understand why acceleration would be zero.

Battery maintains constant voltage.Since it is removed voltage will change. But there is no flow of charge.Using the relation between Charge ,Potential and capacitance and this information find change in voltage and potential energy.

That's a general trend.But there are exceptions. Besides you have to compare IE2.So this can't be used. After 1st Ionisation K attains the EC of nearest noble gas i.e. Argon which means it is highly stable.So IE2 of K is highest. On the other hand if you see Be,Mg,Ca then the outer shell EC of...

It seems like a case of free-fall. u=0,a=g and t is given Use the equation H=ut+1/2at2 But this is what I presume.There isn't any clear information about the motion of Humpty Dumpty.