3,488 reputation
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bio website mathandcode.com/programs
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age 21
visits member for 2 years, 11 months
seen 26 mins ago

Aug
15
answered Electric potential of a sphere at a point on its surface
Aug
15
reviewed Approve Electric potential of a sphere at a point on its surface
Aug
15
comment Electric potential of a sphere at a point on its surface
Please embed the images! You can upload images to stackexchange from your hard drive through the prompt brought up when you click the image icon in a post. The dropbox link isn't suitable for embedding.
Aug
15
comment What's faulty in my reasoning about energy and momentum in this problem?
I agree with your solution. Your solution is akin to someone running and pushing (of course the athlete has to run to accelerate himself as well, or else he won't be able to apply the force for so long!) while their solution is akin to, say, a rollercoaster accelerating (500N for 5s) and the athlete standing on a platform idly grabbing on and being dragged along.
Aug
15
revised Does the definition of escape velocity apply strictly to an initial velocity of a ballistic projectile?
added 2 characters in body
Aug
15
revised Does the definition of escape velocity apply strictly to an initial velocity of a ballistic projectile?
added 29 characters in body
Aug
15
answered Does the definition of escape velocity apply strictly to an initial velocity of a ballistic projectile?
Aug
12
revised Tidal forces in 3d space
added 121 characters in body
Aug
12
answered Tidal forces in 3d space
Aug
11
awarded  Guru
Aug
11
awarded  Enlightened
Aug
4
comment Why aren't all points on a rolling ball moving?
Point b cannot be moving up or down (it was just moving down and is just starting to move up). If it was moving left or right, it would be sliding against the ground, which is not right (if your car tires slid for example the rubber would be worn down quickly). So it can't be moving left or right or up or down.
Aug
3
answered Can you tell your absolute speed in space?
Jul
29
comment Why can't we see light travelling from point A to B?
@duzzy that info is on the linked wikipedia page under "examples".
Jul
29
awarded  Good Answer
Jul
29
awarded  Mortarboard
Jul
29
awarded  Nice Answer
Jul
29
answered Why can't we see light travelling from point A to B?
Jul
18
comment How does a magnet cause magnetic force and its magnitude/direction?
youtube.com/watch?v=3D2RaDVkylY "When you ask a 'why', you have to be in some framework that you allow something to be true". That's FAR FROM the final say on this (which is why I'm not posting it as an answer), so don't let the video discourage you, but it's important to keep in mind.
Jul
10
revised Does space between objects contract?
edited body