Search found 13 matches

by arnob54
Wed May 25, 2011 3:15 pm
Forum: Physics
Topic: A few questions on newtons law and black hole
Replies: 20
Views: 4599

Re: A few questions on newtons law and black hole

this seems really interesting, from studying my physics books i found the analogy between the formula for grav force and electric force that is directly prop to product of the constituents and inversely prop to the square of the dist. is this analogy applicable for the other two fundamental forces a...
by arnob54
Sun Feb 27, 2011 8:43 pm
Forum: Physics
Topic: question regarding gravitaion
Replies: 3
Views: 1308

question regarding gravitaion

say a satellite is moving in elliptical path instead of circular around the earth. will the astronaut present inside it feel weightless when the satellite is at the ends of the major axis? prove your claim.
by arnob54
Sun Feb 20, 2011 4:23 pm
Forum: Physics
Topic: 4th Dimension
Replies: 10
Views: 3195

Re: 4th Dimension

you're welcome :)
by arnob54
Sun Feb 20, 2011 4:07 pm
Forum: Astronomy & Astrophysics
Topic: Your opinion
Replies: 16
Views: 11734

Re: Your opinion

its okay bro no worries, we all start by asking meaningless questions, and that's how we start learning science :) well about the idea of Rho Critical, its actually not a theory but its a constant term, for example $G=6.675X10^{-11} Nm^2kg^{-2}$ now you might ask how we derive this value? if you kno...
by arnob54
Fri Feb 18, 2011 11:22 am
Forum: Physics
Topic: A few questions on newtons law and black hole
Replies: 20
Views: 4599

Re: A few questions on newtons law and black hole

thankss for the info bhaiya! :)

i had one general question, can you explain to me one of the basic principles of relativity? that speed of light is independent of frame of reference?
by arnob54
Thu Feb 17, 2011 11:24 pm
Forum: Social Lounge
Topic: Mathematical Jokes
Replies: 15
Views: 5400

Re: Mathematical Jokes

bhaiya what does that thing mean which is always posted at the end of BDMO papers?
"TOMAR JIBONER 2ND DIFFERENTIAL NEGATIVE HOUK" ? :S
by arnob54
Thu Feb 17, 2011 11:15 pm
Forum: Astronomy & Astrophysics
Topic: Your opinion
Replies: 16
Views: 11734

Re: Your opinion

i think who ever posted this, has a bit of misconception about the shape of universe, the shape of universe depends on a constant called "Rho Critical" that is the density of the universe, based on current research, there are only 3 possible options: 1. Flat Universe 2. Spherical Universe 3. Saddle ...
by arnob54
Thu Feb 17, 2011 11:11 pm
Forum: Astronomy & Astrophysics
Topic: গ্রহ নক্ষএ
Replies: 25
Views: 15171

Re: গ্রহ নক্ষএ

the idea about "failed star" actually its said so because jupiter is not so heavy compared the amount of mass needed to form a "Star". and the 2nd characteristics of a star is u might say, it should emit "light", the idea is that jupiter DOES emit light but its in infrared and so what we understand ...
by arnob54
Thu Feb 17, 2011 11:04 pm
Forum: Physics
Topic: A few questions on newtons law and black hole
Replies: 20
Views: 4599

A few questions on newtons law and black hole

1. We know from Newton's 1st Law that every body tends to continue its state of inertia unless acted by an external force. Now we know that when Big Bang took place, before that the whole universe was concentrated in a singularity. and since "everything" was inside this singularity and there couldn'...
by arnob54
Thu Feb 17, 2011 10:50 pm
Forum: Physics
Topic: Is it possible to keep the sun always right above the head?
Replies: 4
Views: 1454

Re: Is it possible to keep the sun always right above the he

if you want to find out with absolute accuracy, then you also have to consider the yearly anomaly and the precession of equinox because due to effect of this, earth's tilt is changed by very small angle every year!