Physics
A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps

None of these
It will fall down at the same place where the string breaks
The ball will travel towards the center of the circle and fall down
It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down

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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 only at the center of the tank
The surface of the liquid remains horizontal
The liquid surface falls down on the direction of motion and rises up on the back side of the tank

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