A performer seated on a trapeze is swinging back and forth with a period of 9.24 s. If she stands up, thus raising the center of mass of the trapeze performer system by 43.0 cm, what will be the new period of the system

Jet streams are relatively narrow bands of strong wind in the upper levels of the atmosphere. the winds blow from west to east in jet streams but the flow often shifts to the north and south. jet streams follow the boundaries between hot and cold air. the earth's rotation is responsible for the jet stream as well.

This is what a calorimeter is used for simpler ex, to measure calories in food.

Ireally don’t know