Category Archive: General Physics

Nov 15

Does gravity travel instantaneously?

Does gravity travels instantaneously? Or it travels equal to the speed of light.

Answer:

No clear answer now. If we believe in the Theory of relativity, Gravity (Gravitational Waves travel with the same

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Oct 10

Motion in a vertical circle and conservation of energy

A stone  tied to a string of length l is whirled around a vertical circle with the other end of the string at the centre. At a certain instant of time the stone is at the lowest position and has a

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Permanent link to this article: http://www.plustwophysics.com/motion-in-a-vertical-circle-and-conservation-of-energy/

Jun 25

Addition of vectors – can you add 3 unit vectors to get a unit vector ?

“Can you add 3 unit vectors to get a unit vector ? discuss in terms of velocity, force etc”

-Sindhuja posted

The answer is yes. Please find a detailed description

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Permanent link to this article: http://www.plustwophysics.com/addition-of-vectors-can-you-add-3-unit-vectors-to-get-a-unit-vector/

Jun 28

When several transparent materials are kept above each other, the resultant behaves like an opaque object.Why?What’s the Optics behind it?

When light falls on a object, three things happen –

  • A part of the light is absorbed
  • Another part is reflected ad
  • The remaining part is transmitted.

A transparent medium transmits most of the light incident on it. However, it absorbs a small part as well as reflect a small part.

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Apr 16

Take an online test from Kinematics and get grading instantly

Click Here to take the online test. The link will open in a new window.

Permanent link to this article: http://www.plustwophysics.com/take-an-online-test-from-kinematics-and-get-grading-instantly/

Apr 08

All Nobel Laureates in Physics

Click on the names to know more on the Nobel Laureates in Physics

2009 – Charles K. Kao, Willard S. Boyle, George E. Smith 2008 – Yoichiro Nambu, Makoto Kobayashi, Toshihide Maskawa 2007 – Albert Fert, Peter Grünberg 2006 – John C. Mather, George F. Smoot 2005 –

Roy

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