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The minimum force that must be applied to a machine with a mechanical advantage of 5 in order to lift a 100-kg crate is
Q4: Which one of the following statements concerning
Q11: Bases do not<br>A)taste bitter.<br>B)turn red litmus to
Q13: Ethanol boils at 172<sup> <span class="ql-formula"
Q22: The yield of the product C in
Q26: World energy use in 2035 is expected
Q31: The physics of a heat engine cannot
Q33: The nitrate ion has the formula NO<sub>3</sub><sup>-</sup>.The
Q34: Mammals originated in<br>A)Precambrian time.<br>B)the Paleozoic era.<br>C)the Mesozoic
Q38: Enriched uranium contains<br>A)more <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB4511/.jpg" alt="Enriched uranium
Q40: Which of the following compounds is not