What is speed of sound through water?
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Why does the reflection of objects seen on a cheap looking glass give distorted images ?
For projectiles fired at identical speeds but various angles from the ground, neglecting air resistance and the curvature of the earth, at what angle will the maximumhorizontal distance be attained?
Why does sun appear flat during sunrise and sunset?
When the seas freeze in-winter, the fish never die why?
Why gave we to put back the clock continually, when we travel round the world west-wards ?
Explain how do you find your body volume using a tape measure?
What is time?
Who did first record the sound?
a thing that will break easily?
Why us the height of mercury column unaffected by the difference in the value of gravity at the same place?
Explain the Photometry ?
How does birds specially adopted to flight ?