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Jan 2010 edexcel

hey im struggling with question how would you work it out
question18 c is there a formula to work it out? how would you work it out
Original post by Imrankhan0121
hey im struggling with question how would you work it out
question18 c is there a formula to work it out? how would you work it out
heres the pic
k.PNG25.9KB
g.PNG33.8KB
still i dont understand the solutuon

One path length = 18 cm + 6 cm = 24 cm
Other path length = 30 cm + 12 cm = 42 cm
Path difference = 42cm – 24 cm = 18 cm why do they subtract
Number of wavelengths = 18/12 = 1.5 where does 12 come from
ok understand
its destructive because 1.5 thanks dude
answer my other thread dude
i dont understand
should i count each square under the wave
I may be ******ed but
4 squares in horizontal to complete wave so t is 20

Using the equ =1/20
How do u get 50 htz
Ok I get it
Read ur inbox
Original post by Imrankhan0121
Ok I get it
Read ur inbox


http://www.thestudentroom.co.uk/showthread.php?t=3364183&p=56312969#post56312969
heres my other thread
http://www.thestudentroom.co.uk/showthread.php?t=3364121
dude i thought ms was meter second
not milli

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