un tren va a una velocidad de 18m/s; frena y se detiene en 15 segundos. calcular su aceleracion y la distancia recorrida en ese tiempo

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.