Physics
Rotameter is used to measure

Density of fluids
Vortex flow
Flow of fluids
Velocity of fluid in pipes

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Physics
Kinetic energy depends on

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

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Physics
Which of the following options correctly explains the term heat budget?

It is a mode of transfer of heat through matter by molecular activity.
It is the radiation from the earth in the form of long waves.
It is the amount of heat which the surface of earth receives from the sun.
It is the balance between incoming and outgoing radiation

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