Physics, 23.07.2019 06:00 youguyscantbanme
Juan is standing on the street. an ambulance moves toward him and then passes by. what best describes the pitch that juan hears? the pitch remains constant as the ambulance moves toward and then away from juan. the pitch increases and decreases in a repeated pattern as the ambulance passes juan. the pitch drops to a lower pitch once the ambulance passes by juan. the pitch increases to a higher pitch once the ambulance passes by juan.
Answers: 2
Physics, 21.06.2019 17:00, pinkfluffyunicorns
These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.
Answers: 2
Physics, 22.06.2019 09:00, cmflores3245
Sobre transformações cíclicas, são feitas algumas afirmações, determine quais estão corretas. i – a variação de energia interna em uma transformação cíclica é nula; ii – o trabalho, em uma transformação cíclica, é sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cíclica é, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocórica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
Answers: 1
Juan is standing on the street. an ambulance moves toward him and then passes by. what best describe...
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