A hydrogen balloon alway move upward. But at which layer of atmosphere it release from the balloon? Also what feul we use in the space(i mean outside earth), i mean to change the direction of the satellite or any space craft. We usually see a gas is used to move them, what gas is it? We consider...
Why we assume that the light didn't reach to us so we see the space black mostly...also u r telling about some plasma, what is it?? Also u said universe is expanding then why we see the same star from a specific region in the sky?
When we see with open eyes or in visible range of wavelength of e.m. wave we see black space containing some star...but if we see the space in other range of wavelength of the e.m. wave what will we see?? Also why the space is black?? Which matel we find in space mostly? Can we extract those...
Gauss's law is all about the electric flux, isn't it. So the line of force of a charge travel to infinity, so at a point on which we will calculate e.field intensity may lie at infinite distance, also in this derivation we do calculate the derivation by taking 0 rad angle between E and ds, i.e...