In preparation to anchor a buoy at the end of a swimming area, a worker uses a rope to lower a cubic concrete block, 0.250 m on a side, into ocean waters. The block descends with a constant speed of 1.90 m / s. It can accurately represent concrete and water as incompressible.
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Explicación:
NO ESPIKO INGLIHS
b
riquelmeleila29:
no no es
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