When sound waves travel from air to water, what happens to its frequency?
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When a porcelain dish or a glass material are falling on the floor, it breaks but on falling on sofa or sponge it will not break. Why?
What is radium used for?
the time period of three pendulums are given in a sequence as a= 1.27s b=0.85s c=0.99s the given sequence may not be correct arrange the time period in a correct sequence
how does a medicine is filled in dropper
mitre gears are same as
Define Mass?
explian PIN photodiode and avalanche photodiode
Why does heated air expand?
When is fluorescence strong?
Describe the Infra-red and Ultra-voilet rays?
How fast can a shadow move ? If a moth fly's in front of a very bright room temperature light powerful enough to light up Saturn like the sun could it's shadow move faster then light if there was no light diffusion.
How does a sailor find his longitude ?