What is refraction of light?
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Why dies a stone fall when thrown upward, while a balloon rises up?
Explain the Elasticity and Surface Tension ?
what is ngative current
What is larger the force the earth exerts on you or the force you exert on the earth?
What is the Dry Ice?
Why does it take longer to heat a bucket of water than a cup of water?
How does a sailor find his longitude ?
can we use kgs instead of kg? why?
types of engines available...?and their functions
Explain reflection of light?
What is Slaked lime ?
Explain Solution ?