Physics, 13.05.2021 18:30 kloeydrea08
Um ônibus está viajando numa estrada retilínea com a velocidade de 20 m/s. Vendo adiante um congestionamento no trânsito, o motorista aplica os freios durante 2,5 s e reduz a velocidade para 15 m/s. Supondo que a aceleração é constante durante o período de aplicação dos freios, calcule o seu valor, em m/s²?
Answers: 2
Physics, 22.06.2019 11:50
Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?
Answers: 2
Physics, 22.06.2019 18:30
Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
Answers: 1
Physics, 22.06.2019 20:30
Atemperature inversion can cause a warm air mass to move over a colder air mass. this traps the colder air mass and prevents surface air from rising. this may result in which of these? a) smog b) acid rain c) freezing rain d) a thunderstorm
Answers: 3
Um ônibus está viajando numa estrada retilínea com a velocidade de 20 m/s. Vendo adiante um congesti...
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