Undergraduate / (Wheaton people / Caring community) - short supplemental answer [5]

Your essay is great, but I would concretize the following point a bit:
"Going through facts, statistics and reviews"
e.g. mention some number/facts/opinions that amazed you and influenced on your choice.

Good luck!

Undergraduate / 'the essence of studying physics' - future academic interests and attending WPI [3]

Sounds great and kinda catchy.
The only thing I'd rewrite is To me, applying my knowledge and understanding to reality is the essence of studying physics
What exactly did you mean?
I guess "I want to study physics because I want to apply my knowledge and understanding to reality" , if expanded and more complex, fits better. Anyway, just my humble opinion.

"using our expertise, initiative, and ideas" can be replaced with "using our skills, abilities and gained knowledge and following our common passions"

Good luck!
btw, I love physics too