Recent content by Sampad Saha

As we know that every object that has kinetic energy could also have potential energy. Now suppose an object is in rest at a distance of h meter from ground so it has some potential energy and no kinetic energy, now if it starts to fall towards the ground can we say that its total potential...

we know Complex number is consists of a real & imaginary number so if a+ib is a complex number which one is real part, imaginary part, real number and imaginary number? I think "a" real and "ib" imaginary part...pleasez help me if Iam wrong ...

yaa..Sir, I know that its internal resistance must be zero. But what's about total resistance of the circuit? Is it also be zero?

If we connect a single resistor in the circuit of ideal voltage source then what'll be its total resistance? ? Isn't it zero? As shown in image .so is it possible that the total resistance of a circuit is 0 Although it has 5ohm resistor!?

In this above image you can see that, The Galilean transformation for t=t' was rejected by Einstein and then again in Einstein 2nd postulates it was written"Velocity of Light is independent on inertial frame i.e it could be the same from all inertial frame" So how can something is rejected and...

I think postulates of Relativity is related to Inertial frames. As according to postulates "1)The laws of physics, including electromagnetism, are the same in all inertial frames. 2)Every observer measures the same value c for the speed of light (in vacuum) in all inertial frames. " But in the...

Please note that I'm asking about interlocking OF crystals not "interlocking crystals "

Ya...I know 2 electron can occupy 1 energy state. But in Fermi-Dirac statistics there is mentioned that "only one electron can occupy one energy state"...!

Why each energy state is having only 1 Fermion or electron instead of 2? as we know fermions or electrons obey pauli's exclusion principal so 1 state can have two electrons with different spin (i.e if one spins up then second spins down) isn't it?

I know Density of energy is the amount of energy of photons per unit volume, but what do you mean by giving the range of frequency between f to f + df ?

What do you mean by the term "energy density of radiation " between the frequency range f and f +df ?

...sorry ...it was a silly mistake of my ...

Thanks to help...it was a silly mistake of my ...

In Earth due to gravity if m is greater, greater the force need to move it..but what in case of space where has no gravity ?