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Announcement Plus Two Physics WEBLINKS

Introducing ASKPHYSICS.COM – A Physics Discussion Site for students

AskPhysics.com is a website for enabling students as well as others to ask questions and discuss Physics. The site is in Bulletin Board Style and the questions and answers will come in threaded form. Ask Physics has just started and is expected to be a big hit. The clean interface and simplicity adds to its […]

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ANSWERS TO QUESTIONS FROM VISITORS

helium balloon raises up slowly through air .why?

Helium balloon raises up slowly through air .why? (Question posted by Siju) Helium is lighter than air and therefore the buoyant force (the upward force exerted by air on the balloon) will be more than the weight of the He filled balloon. So it rises up. As it begins to move upwards, frictional forces (viscous […]

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Questions Received via Ask Me Email

A Question from Heat and Thermodynamics

A thermo stated chamber at a height ‘h’ above the earth’s surface and maintained at 30 degree Celsius has a clock fitted with an uncompensated pendulum. The maker of the clock for the chamber mistakely designed it to maintain correct time at 20 degree Celsius. It is found that if the chamber were brought to […]

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ANSWERS TO QUESTIONS FROM VISITORS

A question from waves

Question: A string in a musical instrument is 50cm long and its fundamental frequency is 800 Hz. if a frequency of 1000 Hz is to be produced then the required length of the string is……………… Answer: When the string vibrates in single loop, its frequency corresponds to its fundamental frequency. In this case two nodes […]