Tell me what is pascal s principle?
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Explain band theory ?
Similar charges repel while dissimilar ones attract each other. How does two electrons attract each other during the formation of bond or why don't the protons in the nucleus repel?
Explain what is h1n1?
What is Soda lime ?
Define Umbra?
Is the electric field constant or does it vary with time in dielectric materials?
In Einstein's mass energy relation E=mc2 why velocity of light is used and never ordinary velocities?what is the exact explanation?
Why are the girders on the railway bridges fixed at one end only?
Explain the Phosphorescence ?
Does gas have density?
Explain Solution ?
What is the advantage of fixed pulley?