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Edexcel Unit 1 (IAL): Physics on the Go, WPH01 (11th January 2016)

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I'm kinda confused in this question, i thought the answer was related to laminar/turbulent and its relation to speed.

https://gyazo.com/e229ac640393b70f2e97c4c3acd7bec9

However, In the mark scheme its related to depth of water and drag, could you explain me this?

It's from the June 2015 IAL paper.

Since the inside of the bend is shallower, the water flow is much closer to the river bed. Therefore, there will be greater friction which will oppose the flow in the inside of the bend compared to the outside of the bend.

Reply 61

YesterdaysDreams

how do you get the distance for each side of the mountain? could someone answer me

Reply 62

kemal05

Hello guys I need help with this question I have just answered. Is my answer right? This took me about 15 minutes to answer and I'm not even sure how I got this answer. I would appreciate it if someone can explain this question to me and how do it simpler.

Reply 63

swwet aish

dont u have to show the stress on both and compare?

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Reply 64

kyze27

Original post by YesterdaysDreams

how do you get the distance for each side of the mountain? could someone answer me

Draw a triangle which represents the mountain, now divide it into two using a dotted line, This forms two right angled triangles, mark the angle of eache (25 and 35). You know the height of the mountain, this is the height of the dotted line. Now use trigonometry to find the hypotenuse of each side (soh, cah, toh).

Hope this helps, and good luck for your exams

Reply 65

swwet aish

Original post by YesterdaysDreams

how do you get the distance for each side of the mountain? could someone answer me

ImageUploadedByStudent Room1452367989.667927.jpg

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Reply 66

YesterdaysDreams

Original post by swwet aish

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thanks, I'd like to now why is sin used instead of cos for the force (833.85N)

Reply 67

swwet aish

as the vertical thing is to find so i used sin :smile:

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Reply 68

SaadKaleem

Original post by therecovery

Thank you

Reply 69

SaadKaleem

Good luck to everyone for tomorrow!

Exams in less than 12 hours!

Reply 70

therecovery

Original post by SaadKaleem

Good luck to everyone for tomorrow!

Exams in less than 12 hours!

likewise broski :biggrin:

Reply 71

swwet aish

Thanks alot ! good luck to all of uu ! please pray for me :smile:

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Reply 72

kyze27

Guys, Just came from the paper, it was pretty good for me. What about you guys. And btw, for the question about trailers, laminar and turbulent, what did you write, []. And for the last one, what was "theta". I got [], also many others got that, what did you guys get.
Anyway hoping for an A, hopefully we all pass with As :biggrin:

(edited 8 years ago)

Reply 73

1234Ahmed123

I also got [] for theta using sin theta/cos theta

(edited 8 years ago)

How was the exam?

Original post by Zacken

Thanks guys! I haven't sat the exam yet and now I know the answer! Grade boundaries going up for y'all! :biggrin:

Hahaha you're luckyy man, Good luck though :biggrin:

Reply 76

SaadKaleem

LETS NOT DISCUSS THIS UNTIL AT LEAST 6 hours please.

Reply 77

Zacken

Original post by SaadKaleem

LETS NOT DISCUSS THIS UNTIL AT LEAST 6 hours please.

You already have...

Reply 78

Zacken

Original post by SaadKaleem

That's enough for now you know.

To clarify, I've already sat this exam. I'm just pretending I haven't to make all of you aware that some haven't and you're raising our grade boundaries by putting these posts up. Can you delete them before I have to close this thread?