Sob a ação exclusiva de duas forças f1 e f2, de mesma direção, um corpo de 6,0 kg de massa adquire aceleração de módulo igual a 4,0 m/s². se o módulo de f1 vale 20 n, o módulo de f2, em newtons, só pode valer:

28. a stone is projected at a cliff of height h with an initial speed of 42.0 mls directed at angle θ0 = 60.0° above the horizontal. the stone strikes at a, 5.50 s after launching. find (a) the height h of the cliff, (b) the speed of the stone just before impact at a, and (c) the maximum height h reached above the grou

Which type of wave can travel without a medium

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).