Physics
Consider the following statements :1. There is no net moment on a body which is in equilibrium.2. The momentum of a body is always conserved.3. The kinetic energy of an object is always conserved.Which of the statements given above is/are correct?

2 and 3 only
1 and 2 only
1, 2 and 3
1 only

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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?

The liquid surface falls down only at the center of the tank
None
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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