For a conservative system, what is `(DeltaE)/(Deltat)`? (E is the At kinetic energy of the system)

Change in kinetic energy of the system is equal to

In what is the loss in kinetic energy of the system due to impact ?

Assertion : Net external force acting on a system of particles is zero but it possible that kinetic energy of the system increases . Reason : Kinetic energy of the system can be changed by internal forces of the system .

A constant external torque tau acts for a very brief period Delta t on a rotating system having moment of inertia I . ( i ) The angular momentum of the system will change by tau Delta t ( ii ) The angular velocity of the system will change by (tau Delta t)//I . ( iii ) If the system was initially at rest, it will acquire rotational kinetic energy (tau Delta t)^(2)//2I . ( iv ) The kinetic energy of the system will change by (tau Delta t)^(2) I .

Assertion: If net force on a system is zero, then momentum of every individual body remains constant. Reason: If momentum of a system is constant, then kinetic energy of the system may change.

For an isolated system, DeltaU=0 , what will be Delta S ?

If on giving 40 joul e of heat to a system, work done on the system is 10joul e , what will be the change in internal energy of the system?

A system is provided with 50 Joules of heat and the work done on they system is 10 Joules. What is the change in internal energy of the system in Joules?