2022 AP Physics 2 Free Response #1

Walkthrough of the 2022 AP Physics 1 FRQ #1

Link to the released FRQs:

Link to my PDF Solutions:

AP® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this content.

[felixwang]

How do we know for part (c), that the index of refraction of the prism is greater than the index of refraction for the water

[darkchocospy]

is it ok if i used snells law for part b? I said the spacing between dots decreases because n increases therefore the light bends towards the normal so the bright spots will be closer together (sin(theta) decreases) (i also mentioned that wavelength decreased but i didnt use the equation L = m*lambda because i didnt know how to use that equation)

[alphacenticle]

For my reasoning for part b could I have used the equation “x=(m λL)/d”

[sindhurao]

Why do we use the density of water times the volume of the block and gravity for the buoyant force in part a ii instead of the density of the block times the volume of the water?

[oscarzavala]

Thank you so much, taking the retake on Friday

[elvinchung]

I think it’s better to use index explain the question b such as speed of light in vacuum equals to the index times the speed of light in that medium

[oscarzavala]

For part c, wouldn’t it be good to incorporate snell’s law

[alexproshkin]

is there no pressure force all around the block since it is submerged in liquid?

[danielnelson]

Do you think they'll count me off for having Buoyant force the same length as tension force? I still had gravitational written down

[jaek]

bro what i did not get these questions on my exam