Physics
The earth is a

Good absorber and good radiator of heat
Good reflector of heat
Bad absorber and bad radiator of heat
Non-absorber of heat

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Physics
A tank filled partially with a liquid is subjected to a uniform horizontal acceleration. Which of the following is true for the surface of liquid in the tank?

None
The liquid surface falls down on the direction of motion and rises up on the back side of the tank
The surface of the liquid remains horizontal
The liquid surface falls down only at the center of the tank

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