IAL physics unit 2 JAN 2020

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Reply 20

Ryan1104

Original post by Yousefsuhail69

Nope 80 something so he was wrong

I got 86 something

Reply 21

Ryan1104

Guys what did you write for the ultrasound 6 marks question

Reply 22

Ryan1104

Also what did you get for the work function and how?

Reply 23

Malak amr

Original post by zzayn

guys i also got 17 degrees but there was one thing u people were forgetting, the wavelength was halve of it, and the speed you got was wrong so it was kinda in the range of 33-25 degrees

Why divide wavelength?

Did someone get 171 depth ? cuz we had to show it’s 170m

Reply 26

Hipercondria123

Original post by Ryan1104

I got 86 something

I got 80 too

Reply 27

zzayn

Original post by Malak amr

Why divide wavelength?

because it clearly said for the shallow water d>wavelength/2

Reply 28

Ryan1104

anyone know about ultrasound question

Reply 29

Yousefsuhail69

Original post by zzayn

guys i also got 17 degrees but there was one thing u people were forgetting, the wavelength was halve of it, and the speed you got was wrong so it was kinda in the range of 33-25 degrees

What do you mean? I don’t get you. You’re supposed to use the formulas they gave you and get the speeds and basically use the speeds instead of the refractive index

Reply 30

Dkman99

Original post by zzayn

guys i also got 17 degrees but there was one thing u people were forgetting, the wavelength was halve of it, and the speed you got was wrong so it was kinda in the range of 33-25 degrees

I got around there

Reply 31

Dkman99

Original post by Yousefsuhail69

What do you mean? I don’t get you. You’re supposed to use the formulas they gave you and get the speeds and basically use the speeds instead of the refractive index