Physics, 27.05.2021 16:30 anjali9788
Le coca-cola® est une boisson acide de pH = 2.8.
1/ Que se passe-t-il si on met du cola en contact avec
une casserole en fer ?
2/ Les canettes de coca-cola, fabriquées en acier
(alliage fer-carbone) sont recouvertes, à l’intérieur,
d’un film plastique. Explique pourquoi.
Answers: 1
Physics, 22.06.2019 07:00, jeremiahphillip4396
The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.
Answers: 1
Physics, 22.06.2019 15:10, Bgreene2377
Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k
Answers: 1
Le coca-cola® est une boisson acide de pH = 2.8.
1/ Que se passe-t-il si on met du cola en contact...
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