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Can the frictional electricity produced during landing of a plane be used for constructive purposes?

As we know that in aeroplane during landing the charged produced in it due to the friction with ground are earthed through its wheels; can this charge be stored with the help of a capacitor and used for useful purpose? Answer: I feel that this is a metter for research. If you feel otherwise and […]

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What is Higgs Boson?

Why do we need Higg’s Boson? Helen Heath explains why the Standard Model needs the Higgs boson. http://physicsworld.com/cws/article/multimedia/50419 Gordon Fraser and Michael Riordan argue that the boson discovered at CERN should be known not as the Higgs boson, but the “higgson” Read more at http://physicsworld.com/cws/article/print/2012/jul/04/introducing-the-higgson Related articles How does Higg’s Boson transfer mass?

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A few questions to students

Many teachers often say that, when students get good marks they claim to be because of their own effort and when they fail or get very less marks, they blame it own the teachers. I want to ask this questions to students in open. Any student can join the discussion. Whatever you post, let it […]

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Calculating charge on a body with excess of electrons

How would I calculate the charge on a small sphere with an excess of 5.0 x 10 14 electrons? Asked Kaitlin Thomas Answer: We know that charge on an electron is (-) 1.6 x 10-19 C If the sphere has 5.0 x 10 14 electrons in excess then the body has a net negative charge […]

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How was your Physics Practical Examination?

Hello students! It’s the time of AISSCE Practical Examination. How was your Physics Practical Examination and Viva? Which questions were asked to you? Which were the experiments and activities you were asked to perform? How farely did you do it? Share your experience here as comments to this post. Your responses will be a boon […]

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Random collection of Physics Viva Questions

State the Principle of a potentiometer. (The students say that potential drop is proportional to length but the constant quantities are not mentioned) How can we increase the sensitivity of a potentiometer? Define figure of merit of a galvanometer. Which has more resistance – a galvanometer or a milliammeter? How does an LED emit light? […]

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Horizontal projectile and freely falling body

A rifle at a height H aimed horizontally fires a bullet to the ground. At the same time , a bullet with the same mass in dropped from the same height. Neglecting air resistance, which one hits the ground first?Explain.
ED posted
Answer:
Both will hit t…