Recent content by XxDonniexX

hmm well i tried doing it another way. the difference frequency between when the french sub gives out and receives back is 122 Hz. So that means I am assuming that the US sub would receive half that frequency, therefore rebounding an extra 61 hz plus the 1100Hz. Then just using that formula once...

lol i got 68.52 m/s

hey pat wat did u get for the US submarine's velocity in question 2b.

ok i got a new answer. The speed of the US sub is 68.52 m/s. This still seems pretty fast compare to the French sub but i think it's right, i was told that the velocity of the US will be quite large. Can someone see if your answer agrees to mine please.

I know the equation i wrote is not right, the answer i got for the US sub is 135.86 m/s. Thats wayyy too fast. Thats why i need help, what is the right equation?

Homework Statement A French and a U.S. submarine are moving directly towards each other during manoeuvres in still water. The French submarine is moving at 50.0 km.hr-1. It sends out a sonar signal at 1100.0 Hz. The frequency detected by the French submarine (reflected back from the U.S...

ur answers are all different to mine i got a) -250J/s b) -25000J/kg c) 166.67J/kg/K Its Tony btw