4.3d Ex2 MJ15 P13 Q21 W tube Mercury Heights | AS Pressure | Cambridge A Level Physics

Example 2 - 9702/13/M/J/15: A W-shaped tube contains two amounts of mercury, each open to the atmosphere. Air at pressure P is trapped in between them. The diagram shows two vertical distances x and y. Atmospheric pressure is equal to the pressure that would be exerted by a column of mercury of height 760 mm. The pressure P is expressed in this way. Which values of x, y and P are possible?
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9702_s15_p13

[@xenon7806]

This question took me 30 minutes to figure out and she did it in 12 while explaining and with an easier method

[@nabeeharehman1140]

I formed equations but was trying to simultaneously solve. Testing the options never occurred to me lol. Thanks for this!

[@sufyanbutt12]

I got it right lmao, had zero expectations to get it right. for first 10 minutes I was blanked then somehow got it.

[@hayyans9200]

Smells like a question I would skip

[@kirotorii3881]

LMAOAOAO

[@tahabashir9405]

then no smell of a baking A* nearby ; (

[@hayyans9200]

ye i got a B in AS

[@tahabashir9405]

@@hayyans9200 B is actually good, my preparation is of D till now ; )

[@hayyans9200]

@@tahabashir9405 Thats good, you should easily be able to get an A after practicing for a few months

[@nayciameerab3341]

Fun fact this question tested our patience 🤡

[@markrobertson7299]

EASIEST SOLUTION IS...look that x and y in the picture. x is obviously shorter than y. So, the only option where that is true is B. VOILA. No need to calculate anything for this question.

[@Why_did_YouTube_add_handles]

It says not to scale what are you on about

[@nusaibamahbub1965]

But common sense exists​@@Why_did_KZbin_add_handles

[@nusaibamahbub1965]

Thanks mark rpbertson

[@manhaabdellah2682]

Whoa 😮 thankss

[@humaira6265]

thanks auntie