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.

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

What is the measurement of how fast an object moves relative to a reference point?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.