How to make real arc reacter like as tony stark is possible?

What could be the possible reasons for the change in demand of the consumers?

Among the following statement, which can be a possible statement for the second law of thermodynamics?

1. All the natural processes are the reversible process

2. The energy always remains conserve

3. The entropy of the universe can never decrease

4. Heat transfer from a body at low temperature to a body at high temperature is possible naturally

To push a 25 kg crate up a 27° inclined plane, a worker exerts a force of 120 N, parallel to the incline. As the crate slides 3.6 m, how much is the work done by the worker and by the force of gravity?