Explain what is the shadows?
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When are intermolecular forces the strongest?
What is sonar ( sound navigation and ranging )?
Why all voltage level are multiples of 11, like 220V, 440V, 1100V instead of 200V, 400V, 1000V?
what happens to the period of a simple pendulum taken into a deep mine ?
Explain the law of machines?
Describe the Sphygmanometer?
Explain about Sanitation
The light in vehicle become dim when it is starting,why?
If a number of planes are talking off form an aircraft carrier, what is the minimum interval required between the take-off of the successive planes ?
assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?
What is frequency of sound in air?
we know when two atom combine,the electrions are in valance band,but in case of semiconductor doner or acceptor level are above of v.. whyb