Answers: 3
Physics, 21.06.2019 21:00
An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?
Answers: 2
Physics, 22.06.2019 09:00
Sobre transformações cĂclicas, sĂŁo feitas algumas afirmações, determine quais estĂŁo corretas. i – a variação de energia interna em uma transformação cĂclica Ă© nula; ii – o trabalho, em uma transformação cĂclica, Ă© sempre positivo; iii – ao completar um ciclo, o gás tem a mesma temperatura com a qual começou a transformação; iv – uma transformação cĂclica Ă©, obrigatoriamente, composta de transformações conhecidas, como adiabática, isocĂłrica, etc: a) i e iii b) i e ii c) ii e iii d) i e iv e) iii e iv
Answers: 1
Physics, 22.06.2019 13:00
Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.
Answers: 2
Physics, 22.06.2019 13:40
Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these
Answers: 1
Does force come in pairs?...
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