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PHYSICS DOUBTS

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can sum1 plzz reply if u kno Y SHALLOW WATER IS DENSER THAN DEEP WATER?!!! im havin this question for i-dont-kno-hw-long ... :(

Isn't it that deep water is denser,since shallow water is warmer, and water expands as it warms so its density would decrease, making shallow water less dense.
And high pressure on deep water compresses the molecules more making it denser.(as well as lower temperature).
 
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Isn't it that deep water is denser,since shallow water is warmer, and water expands as it warms so its density would decrease, making shallow water less dense.
And high pressure on deep water compresses the molecules more making it denser.(as well as lower temperature).
dats xactly wat i thot but a ray bends towards normal wen it goes from deep 2 shallow water ..... nd a ray takes that path nly wen the second medium is denser
 
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dats xactly wat i thot but a ray bends towards normal wen it goes from deep 2 shallow water ..... nd a ray takes that path nly wen the second medium is denser

Yeah right, when waves go through less dense medium it slows down, making it bend. which should be toward the normal i guess.
waves refract in the same way as light waves. When a wave is slowed down it bends towards the normal line and when it speeds up it bends away from the normal line.
Thats from my own knowledge, but I prefer asking your teacher if you have the chance. I will be thankful if you share the answer with us :)
 
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Yeah right, when waves go through less dense medium it slows down, making it bend. which should be toward the normal i guess.
waves refract in the same way as light waves. When a wave is slowed down it bends towards the normal line and when it speeds up it bends away from the normal line.
Thats from my own knowledge, but I prefer asking your teacher if you have the chance. I will be thankful if you share the answer with us :)
sure if i do find it :)
 
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yes it did..here's the link.Question no.27
http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Physics (0625)/0625_s13_qp_11.pdf
hope u find the answer :)
its pretty simple ..... i'll try my best 2 give u an easy explanation ...
first draw the current flow direction in the coil (from +ve terminal of battery to -ve terminal)
next use the maxwell's screw rule ... in the first case (where current is not reversed) current is upwards so the magnetic field of both the iron rods will be anticlockwise nd as the magnetic feld lines go from north to south ... the left side of both magnets will be north ...
the right side of the first magnet, which will be south, and the left side of the second magnet, which will north, attract each other as opposite forces attract
this is the same thing that happens when current is reversed ... as poles also will reverse ...
I kno this cud b a bit confusing coz i cant explain using diagrams... so for each step try drawing it urself .... hope u understand :)
 
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TTTTTTHHHHAAAANNNNNKKKKKK UUUUUUUU SOOOOOOOOOOOOOOOOOOOOOOO MMMUUUUCCCCHHHH!
I hadnt thought abt the Maxwell's screw law..I'll try to use ur method and see
glad it helped ... dint think u cud actually understand wat i wrote .. it was confusing even wen i read it :p
nd i c u must hav been screwin ur brain 4 that question judging by the number of capital letters uve used 2 thank me :p ... nyway UW
 
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Yeah right, when waves go through less dense medium it slows down, making it bend. which should be toward the normal i guess.
waves refract in the same way as light waves. When a wave is slowed down it bends towards the normal line and when it speeds up it bends away from the normal line.
Thats from my own knowledge, but I prefer asking your teacher if you have the chance. I will be thankful if you share the answer with us :)
hey i checked it up nd this was what i got
Density of water does NOT change .... it remains constant as density=mass/volume .... in shallow water volume decreases nd mass decreases ... in deep water mass increases while volume increases .... so density does not change from deep to shallow water
However, the most significant property that affects water waves is the depth of water ... they travel fastest in deepest water .... so they naturally slow down in shallow water... when a wave's speed decreases its wavelength also decreases nd thus, the ray bends towards normal
so the speed of water waves has got nothing to do with the density of water, but its depth!!!
hope u got my point :)
 
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hey i checked it up nd this was what i got
Density of water does NOT change .... it remains constant as density=mass/volume .... in shallow water volume decreases nd mass decreases ... in deep water mass increases while volume increases .... so density does not change from deep to shallow water
However, the most significant property that affects water waves is the depth of water ... they travel fastest in deepest water .... so they naturally slow down in shallow water... when a wave's speed decreases its wavelength also decreases nd thus, the ray bends towards normal
so the speed of water waves has got nothing to do with the density of water, but its depth!!!
hope u got my point :)

Oh okay' I get it point' thanks for sharing :)
 
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