Describe the structure and working methods of a barometer in short

Explanation:

Other simple ways to carry a victim include the four-hand seat, backpack carry, ski pole or tree limb backpack carry, and coiled rope seat. In the first method, two rescuers interlock hands. Each rescuer first grasps his right wrist with his left hand.

the device is called “ rocket engine”

true tan speed = ang vel x radius