1 Physics -- Ionic Equilibrium

Does the universe have a center? Explain. Yes, the centre of the universe was given by two famous theories; geocentric theory (Earth as a centre of the universe) and Helio-centric theory (Sun as a centre of the universe). So, we can consider our galaxy as the centre of the universe. Thi...

Does the universe have a center? Explain.

Yes, the centre of the universe was given by two famous theories; geocentric theory (Earth as a centre of the universe) and Helio-centric theory (Sun as a centre of the universe). So, we can consider our galaxy as the centre of the universe. This is because the universe looks more or less the same from all locations.

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Is mass intrinsic property of a material?

Mass is an intrinsic property of any any physical object. Intrinsic property refers to the thing than an object has within it which is influenced by other things.

From the Newton’s law of gravitation there must be gravitational force of attraction between two massive bodies, such as galaxies. If so, why the galaxies are moving away from each other? Explain

Yes, you are correct that gravitational force must be present between two huge galaxies. We can't say that all the galaxies are moving away. For example, our neighbouring galaxy (AndromedaGalaxy) is attracted to milky way galaxies.

But many other galaxies(which are far enough that they cannot affect much by gravitation) are moving away from each other because space is itself expanding. Thus making them further apart.

Write the quark composition of proton-neutron.Proton: Proton consists of three quarks uud ie, two u quarks & one d quark.Neutron: The combination of three quarks (udd) gives a neutron particle.

Give two evidences to show that the universe is expanding.The two evidences to show that the universe is expanding are red shift and big bang theory Redshift: According to Doppler effect, if the so...

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