Answer:
C) 26.6
Explanation:
I don't know how to calculate vector
I'll just give you the link for it but count it as my answer. http://www.differencebetween.com/difference-between-leptons-and-vs-hadrons/
Answer:
bro i think ur from the uni of arid agriculture rawalpindi and today is your networking paper
Explanation:
They can't hear an echo in small room because in it the sound can't be reflected back. For an echo of a sound to be heard,the minimum distance between the source of sound and the walls of the roomshould be 17.2 m. Obviously,in asmall room echoes cannot beheard.
