Physics
Kirchoff's Voltage Law is known as

Conservation of Charge
Conservation Energy
None of these
Both

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Physics
A cyclist leans inwards when he is negotiating a curve so that

He may increase his speed
No frictional force may be produced between the wheels and the axle
Necessary centripetal force may be available from the horizontal component of the normal reaction due to the track to maintain the curved motion.
His weight may be reduced

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Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

It is narrow band of high-velocity wind.
Jet streams are typically continuous over long distances.
In summer, the polar front jet achieves its maximum force.
It follows the wave path near the tropopause at elevations of 8 km to 15 km.

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