TerronRice
05.03.2021 •
Biology
A building under construction requires building materials to be raised to the upper floors by cranes or elevators. A quantity of cement is lifted 76.2 m by a crane, which exerts a force on the cement that is slightly larger than the weight of the cement. If the work done in excess of the work done against gravity is 1.31 x 10 3J, what is the unbalanced, overall force exerted on the cement?
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Ответ:
Os governantes africanos mantiveram e ditaram o controle e o suprimento de cativos ao comércio de escravos no Atlântico. O impacto do comércio foi aumentar as fortunas individuais no curto prazo. Mas, através da competição, os governantes poderiam ter seus poderes reduzidos, eliminados ou fortalecidos.
Explanation: