Odgovor: REkao bih - Amerikanci u vijetnamskom ratu.

dajte mi malo vremena - ne mogu da ucestvujem sa posla - filtrira me server. 

Pravilo je 12 sati .

Pogrsan odgovor.

Prvi su britanci u II sv. ratu upotrebili iseckanu alu-foliju za ometanje nemackih radara pri napadu na Hamburg 1943. Projekat se zvao "Window".

pitanje je bilo  raketne protiv mere u 2 ratu nije bilo raketa vazduh-vazduh - bar ne onih sa vodjenjem a bogami ni protiv mera. Mislim ako bas hocemo da budemo precizni.....

u pravu si i mene je to zbunilo, ali nakon detaljnijeg istrazivanja shvatio sam na sta je mislio. Ipak, slazem se da mi se oduzme bod i dodeli tebi, posto je, verujem, tvoj odgovor na onako definisano pitanje tacniji.

MA jok nema veze - ionako ne mogu da ucestvujem ko covek zbog vremenske razlike - ovo je vishe principa radi - 

Ok, ako je to reseno, onda da ja postavim neko pitanje:
zasto loptica za golf ima one jamice po povrsini?

Every modern golf ball has dimples designed to increase and shape the lift and drag forces by modifying the behavior of the boundary layer. It should be noted that drag and lift forces exist also on smooth balls: they are only modified, not created, by dimples.

Dimpled balls fly farther than non dimpled balls due to the combination of two effects:

Firstly, the dimples delay separation of the boundary layer from the ball. Early separation, as seen on a smooth sphere, causes significant wake turbulence, the principal cause of drag. The separation delay caused by the dimples therefore reduces this wake turbulence, and hence the drag.

Secondly, backspin generates lift by deforming the airflow around the ball, in a similar manner to an airplane wing. Backspin is imparted in almost every shot due to the golf club's loft (i.e. angle between the clubface and a vertical plane). A backspinning ball experiences an upward lift force which makes it fly higher and longer than a ball without spin would. Sidespin occurs when the clubface is not aligned perpendicularly to the direction of swing, leading to a lift force that makes the ball curve to one side or the other. Unfortunately the dimples magnify this effect as well as the more desirable upward lift derived from pure backspin. (Some dimple designs are claimed to reduce sidespin effects.)

wiki

Mogao si i da prevedes, pa da svi nauce ponesto.
 
iljushin 5 bodova