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Form of Kepler’s in a different universe!

admin — Sat, 25 Feb 2012 22:13:29 +0000

Mukta asked: “imagine a planetary system in which gravitational force varied as 1/r instead of 1/r2 .what relation would correspond to KEPLER’S THIRD LAW (SQUARE OF TIME PERIOD / CUBE OF SEMI MAJOR AXIS.?” (Answer) If the gravitational force varied as 1/r instead of 1/r2 , then Kepler’s Law of periods would have to be [...]

Time Travel Again !

admin — Sat, 25 Feb 2012 10:13:08 +0000

Davide Writes: (The email is posted as such. SO, sorry for the telegraphic language and poor spelling and grammar) “Hello there i have one more question,a crazy one:) according to Einstein we need a enormous amount of energy to push matter at a speed of light,now for me the real problem there is that an [...]

A body travels 100m in first 2 seconds and 104 in the next 4 second.how far will it gimove in the next four second if the acceleration is uniform?

admin — Fri, 24 Feb 2012 22:13:06 +0000

A body travels 100m in first 2 seconds and 104 in the next 4 second.how far will it move in the next four seconds if the acceleration is uniform?

Amateur Research

Mathew Abraham — Fri, 24 Feb 2012 10:13:15 +0000

Ask Physics is looking for students from Kendriya Vidyalayas of Kerala who are interested in doing Research in any branch of Science. If interested, Use the link below to express your interest. You will be contacted by the concerned official. Click Here to express your interest. Related content: Ask Physics Forum

Register yourself for more facilities and better experience

admin — Thu, 23 Feb 2012 22:13:14 +0000

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BP, cardiac arrest and Physics

Mathew Abraham — Thu, 23 Feb 2012 10:13:12 +0000

Ashlin asks: HOW IS CARDIAC ARREST RELATED WITH PHSICS? WHAT IS THE PRINCIPLE OF SPHYGMOMANOMETER? Devika asks: Why the blood pressure in humans is greater at the feet than at the brain.

Hidden(so far) Particles

admin — Wed, 22 Feb 2012 22:13:34 +0000

From my very basic “understanding” of particle physics and our search for hidden particles something keeps nagging at me; is it possible that quantity/quality of particles/boson are tied to time? In other words can the absolute age of any particular piece of matter such as when that particle was actually formed after the big bang [...]

Kinetic Energy and Momentum comparison

admin — Wed, 22 Feb 2012 10:13:04 +0000

A light body and a heavy body have the same momentum which of the two bodies will have greater kinetic energy ? Sumanta Das requested to explain the answer to this question. Answer: As we know, The momentum of a body, P = mv whee m is the mass and v is the velocity and [...]

Why Rockets have a fixed diameter?

admin — Tue, 21 Feb 2012 22:13:33 +0000

Is it possible to create a rocket with a variable blast diameter to achieve different levels of torque and power similar to a geared transmission? I suppose the best analogy I have is the difference in power between a garden hose normally and when you plug it with your thumb, creating more pressure. Would it [...]

Optics

Mathew Abraham — Tue, 21 Feb 2012 10:13:06 +0000

Rajat asked: “when we exchange the lenses of compound microscope, then why it does not act as a telescope?”