Answer:
oxygen silicon aluminun iron
Latitude, elevation, ocean currents, topography, and prevailing winds. There's probably a few others but these are the most important.
Sound intensity = 1/(r^2)
That is Sound intensity is indirectly proportional to the distance. Therefore, sound becomes 9 times less intense.
D=m/V therefore the answer is 120/200 or 0.6
Answer:

Explanation:
initially the merry go round is at rest
after 6.73 s the merry go round will accelerates to 20 rpm
so final angular speed is given as



so final tangential speed is given as


now average acceleration of the girl is given as


