Physics
The energy emitted by the Sun is due to

Chemical reaction
Nuclear fusion
All of these
Nuclear fission

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Physics
Kinetic energy depends on

Both mass and velocity of the moving body
The pressure of the moving body
The velocity or speed of the moving body.
The mass of the moving body

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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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