Answer:
Hadley cells
Explanation:
Formation of Convection Currents
Atmospheric convection currents are global patterns of air movement that are initiated by the unequal heating of Earth. Hadley cells- the convection currents that cycle between the equator and 30˚ north and south.
Hertz is the answer for this question
Answer: 0.45..............
They'll vibrate at their characteristic resonant frequency. That depends on the material the object is made of and its shape.