Give any two effects of a force on a non-rigid body.

What is the effect of force on non-rigid body?

What is the effect of force on a rigid body ?

Give any two uses of a screw.

State the effects of a force applied on (i) a non rigid, and (ii) a rigid body. How does the effect of the force differ in the two cases ?

What is a rigid body?

S_(1): If the internal forces within a system are conservative, then the work done by the external forces on the system is equal to the change in mechanical energy of the system. S_(2): The potential energy of a particle moving along x- axis in a conservative force field is U=2x^(2)-5x+1 is S.I. units. No other forces are acting on it. It has a stable equalibrium position at one point on x- axis. S_(3) : Internal forces can perform net work on a rigid body. S_(4) : Internal forces can perform net work on a non - rigid body.

Give any two features of Genetic Code.

Give any two examples of mesophytes.

State any two harmful effects of acid rain.

Give two harmful effects of carbon monoxide poisoning.