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Physics, 21.06.2019 18:00
According to the law of conservation of mass, in a chemical reaction the total starting mass of all the reactants equal the total final mass of all the products. true or false?
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Sobre transformaƧƵes cĆclicas, sĆ£o feitas algumas afirmaƧƵes, determine quais estĆ£o corretas. i ā a variaĆ§Ć£o de energia interna em uma transformaĆ§Ć£o cĆclica Ć© nula; ii ā o trabalho, em uma transformaĆ§Ć£o cĆclica, Ć© sempre positivo; iii ā ao completar um ciclo, o gĆ”s tem a mesma temperatura com a qual comeƧou a transformaĆ§Ć£o; iv ā uma transformaĆ§Ć£o cĆclica Ć©, obrigatoriamente, composta de transformaƧƵes conhecidas, como adiabĆ”tica, isocĆ³rica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
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Physics, 22.06.2019 21:10
Which of the following is a measure of the amount of light a star directly emits? a. luminosity b. intensity c. wavelength d. brightness
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If the frequencies of two component waves are 24 hz and 20 hz, they should produce beats per second...
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