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One more way to ask Physics Questions

Hello everyone!

 

We are introducing here one more way to ask questions. Visit http://www.askphysics.com/answers/ and post your questions.

 

Your questions will directly reach the server and the experts can review the questions directly from the website. This makes your questions getting published faster.The public and guests as well as members can also answer the questions using this new system..

 

"Question War"

 

So, visit http://www.askphysics.com/answers/ and try answering some questions now!

 

The questions and answers will be published and can be viewed by the members and guests only after scrutiny and approval by admin.

Wish you all a wonderful experience with AskPhysics project.

 

We are not Psychic – It’s Physics Here!

We receive many questions daily where in questions based on dreams, love, relations etc. are asked.

Psychic CatWe thought initially that those were posted by spammers. But the emails and posts were not from spam-bots but genuine IPs and persons. On analysis, it was found that those posts were made by people who thought that the site name as “AskPsychics” and thus they asked such questions. Some even misspell Psychic as Physic.

When they don’t get their answers, they come back to the site and start looking at the answered questions to find that the site is all about Physics and that there are no Psychichs here!

Thanks to our principle that we do not allow questions to be published directly. All questions posted via the Ask a Question link reach the email inbox of the admin and editors of the site. we scrutinize the question and are posted to the site only if it is related to Physics or education.

Once again I would like to announce –

We are PHYSICS People

Not Psychics

Limitations of Homogenity

Paraser asked

“What are the limitations of homogenity?”

The question is acutually”What are the limitations of dimensional analysis?”

The dimensional analysis is based on the principle of homogenity of dimensions. The question is already discussed earlier  HERE

Relativity, Black Hole and some doubts

In the model of the big bang I would like to pose the following question. My understanding is that

1. The expansion of the universe is accelerating and

2. The radiation or shock wave to keep the analogy going is something we can measure.

My question is this. While we can rewind the clock to a single moment when the universe was infinity dense how do we know that this was a moment at all. Let me elaborate. As the universe expands could time or space time not also expand and if so than when the big bang occurred is something we cannot measure merely by rewinding the clock. If we are experiencing time at a given rate when the universe is at its current size would time not be being effected by the expansion also and if so would that mean the there was simply no start and no end to the universe? Perhaps the big bang is not as accurate as we may wish and perhaps it is our ability to comprehend that is limited. I propose there is no start or end to the universe it has always and will always be as it, and we, cannot exist without time and as such these two objects or things form a symbiotic relationship with each other. While the universe expands so does time and its effects are reduced in line with its expansion. Does this sound plausible and if not why?

IIT Kanpur : Previous Question Papers of JAM for MSc

Previous years Question Papers of JAM

Paper Name
2005
2006
2007
2008
BT
BT
BT
BT
BT
CA
CA
CA
CA
CA
CH
CH
CH
CH
CY
GG
GG
GG
GG
GG
GP
GP
GP
GP
GP
MA
MA
MA
MA
MA
MS
MS
MS
MS
PH
PH
PH
PH
PH

Question from Beats (Waves)

Sanjeet asked:

"the displacement of a particle in periodic motion is given by "y=(cos2t-2cost+2sin^2t+1). What is the no. of beats that can be heard in 10 seconds?"

A Question from Current Electricity

Pratham asked:

The resistances of 2 bulbs are in the ratio 1:2.if they are joined in series,find the ratio of the energy consumed by the 2 bulbs?

 

Answer:

When connected in series, the same current flows through each of the resistors. Therefore, the energy dissipated is directly proportional to their resistances. That is, the ratio of energy dissipated will nbe same as the ratio of resistances. (1:2)

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  • Post Edited: Scattering, Blue Sky, reddish sun https://t.co/wrRZys2xpe
    about 3 hours ago
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