it is proposed to use a small waterfall to turn an electricity generator. 10 m cubed of waterfall 50 m per minute. only 1/5 of its energy can be obtained usefully. show that the water can develop 16.7 kW​

What is another name for the spanish navy in 1588? a) spanish royal fleet b) spanish armada c) spanish yacht crew d) spanish tall ships

In a citizens elect the president as head of government separate loy from the legislature

The development of simple stone tools by early hominids led to the ability to procure meat more efficiently. this in turn led to the change in diet that included larger amounts of protein. many scholars believe that this shift in diet was a significant part of how our ancient ancestors adapted so quickly to a varied set of environments, and thus were able to begin cultural development. this demonstrates the intimate connection between