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Physics

Physics
Where does hydroelectric energy come from?

Solar
All of these
Water
Air

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Physics
Which sources produce alternating current (AC)?

Solar power plants
All of these
Hydro-electric generators
Batteries

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Physics
Kirchhoff's laws are applicable to

None of these
C. and A.C. circuits both
C. circuits only
C. circuits only

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Physics
The average kinetic energy of the molecules of an ideal gas is directly proportional to

Velocity of Molecules
Temperature of environment
Absolute temperature of the gas
Mass of Molecules

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Physics
After removing two electrons from helium atom it become?

Gama particle
X rays
Alpha particle
UV rays

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Physics
Stars appears to move from east to west because

All stars move from east to west
The background of the stars moves from west to east
The earth rotates from east to west
The earth rotates from west to east

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