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I'm a physics graduate student.


Jun
22
comment Intuitive explanation for why centripetal acceleration is $\frac{v^2}{r}$
No, that is completely wrong. Nothing in my answer says anything remotely like that. It is only because both position and velocity had constant magnitude and rotate at the same frequency that we can take their derivative in the same way. It is obviously not true for arbitrary functions.
Jun
22
comment Intuitive explanation for why centripetal acceleration is $\frac{v^2}{r}$
The answer does assume understanding some basic properties of derivatives, such as linearity.
Jun
22
comment Intuitive explanation for why centripetal acceleration is $\frac{v^2}{r}$
Yeah, I'm really not getting your point. Maybe you can think more about it, phrase it more clearly, and post it as a separate question.
Jun
22
comment Intuitive explanation for why centripetal acceleration is $\frac{v^2}{r}$
Sorry, but I can't understand your point at all. There's nothing about polynomials here. It's an argument based on geometry.
Jun
21
answered Intuitive explanation for why centripetal acceleration is $\frac{v^2}{r}$
Jun
20
awarded  Popular Question
Jun
17
answered Kinetic energy dissipation in braking a vehicle
Jun
15
revised CGS Units for Magnetism
deleted 1 character in body
Jun
14
awarded  thermodynamics
Jun
13
answered Momentum which is transfered to the wall of container by a molecule
Jun
13
answered Shape of a rotating fluid surface
Jun
13
answered Size of a glass capillary for noticable capillary action
Jun
10
comment Size of a glass capillary for noticable capillary action
Downvoted because it's obvious that the material affects the height of the column.
Jun
9
comment Why are log scales so common?
see quora.com/Why-do-humans-perceive-logarithmically
Jun
6
revised Why are log scales so common?
deleted 10 characters in body
Jun
6
answered Why are log scales so common?
Jun
3
comment Why is the light reflected at the same angle from mirror?
A single atom scattering isotropically violates momentum conservation.
Jun
2
awarded  Popular Question
Jun
1
comment Two people are holding either end of a couch, is one person exerting more force than the other?
This answer says the same thing as the upvoted answers; why is it downvoted?
May
31
revised Two people are holding either end of a couch, is one person exerting more force than the other?
added 137 characters in body