A stone is thrown straight upwards from a rooftop 12 m above the ground with an initial speed of 5 m/s. How long does it take the stone to fall to the ground

Iwas going to ask that quesytion  sorry dude i dont  know : (    : /

If you're looking for an even spread of clay, silt and sand, add a considerable amount of sand and some clay until the 3 even out". soil texture triangle. silty clay loam soil is approximately 20 percent or less sand, 25 to 40 percent clay, and 40 to 70 percent silt.

The anwser is: wave a has a greater pitch and frequency.