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
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
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