275 reputation
211
bio website
location Bangalore, India
age 17
visits member for 1 year, 3 months
seen yesterday

I love learning about science!


Sep
24
awarded  Autobiographer
Aug
30
awarded  Yearling
Jul
5
revised Why is gas(oline) in gas stations sold by volume (as opposed to mass)?
edited tags
Jul
5
comment Why do batteries become weaker
This doesn't really answer the question. Anyway, wouldn't no charge flow through the battery when its terminal potential matches the output voltage of the charger?
Apr
24
comment How long would it take me to travel to a distant star?
I don't get it, why did you ask this without giving a chance to anyone to answer it?
Mar
19
awarded  Necromancer
Mar
15
comment Why does a candle blow out when we blow on it? Our breath is 16% oxygen and only 4% CO2
Exhaled air contains water vapour too...
Mar
5
comment Why does a remote car key work when held to your head/body?
This is so cool! Thanks for sharing!
Feb
24
comment Sun's Right Ascension appears to be wrong in my Stellarium
Maybe Astronomy SE then?
Feb
24
comment Sun's Right Ascension appears to be wrong in my Stellarium
Um, are you sure this is a physics question?
Feb
9
comment What justifies dimensional analysis?
I'm tempted to give this answer a +1 merely on the basis of its length.
Jan
15
comment What keeps mass from turning into energy?
This answer also supplements how photons exist despite being "massless". Clear and correct, so +1.
Jan
14
comment How can you have positive electricity
I don't really get your question. Are you sure you're not mistaking potential difference for flow of protons?
Jan
2
comment Does light have mass/weight?
I think you should change your question title or content. I fail to see the corelation between the mass of electrons in flash memory and the mass of photons.
Jan
2
comment Batteries connected in Parallel
why would you connect two batteries in parallel? :P I would expect an explosion too!
Jan
2
comment Net acceleration felt by a body on Earth
Your thinking is correct, you will need to account for the centrifrugal force due to rotation. In fact, this centrifrugal force IS the reason why one weighs less at the equator than at the poles.
Dec
30
comment Rocket/Thrust/Gas/Free Expansion of Gas
let us continue this discussion in chat
Dec
30
comment Rocket/Thrust/Gas/Free Expansion of Gas
Geez, I must say that it was pretty entertaining too; that guy is so passionately wrong. With regards to your question I don't think the free expansion term is even relevant here. Think about it, if the rocket was expelling stones at high velocity rather than fuel in space, wouldn't the rocket move the same way?
Dec
30
comment Rocket/Thrust/Gas/Free Expansion of Gas
But NASA's site doesn't say that, it says: F = m dot * Ve + (pe - p0) * Ae Here, the "m dot" term is important. It means mass expelled per unit time and multiplying it with velocity you get exactly the same units as force. So, there is no mistake with NASA's explanation here, I could go on and on, but that wouldn't be answering your question and I'm not too sure whether an answer like this would fit with Physics SE guidelines.
Dec
30
comment Rocket/Thrust/Gas/Free Expansion of Gas
For example, he "debunks" using $F = ma$ because: "The first term says Force = Mass x Velocity whereas NASA web sites say that Force = Mass x Acceleration (Newton’s 2nd law of motion) NASA sites also say that Mass x Velocity = Momentum which is not a force. Momentum is potential energy."