Questions

Any of the basic mechanical devices for applying a force are called simple machines.

There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.

The structural unit of compact bone is Osteons or Haverisan systems.

Another name for the governor of the state is Chief Executive of the state.

And we also know that, The attorney general is the head of the US Department of Justice, The vice president is just under the president of the US and The secretary of state is the head of the US Department of State.

Tips : 

The leader's role is :

To communicate the strategic vision to management with clarity

 To translate the vision into concrete direction and plans

To identify and communicate priorities, short term objectives, timelines, performance measures, clear accountabilities and performance agreements to management;

 To provide quality judgment and advice.