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CBSE Class 9 Answered

if i am asked to define weightlessness how shall i define it???
Asked by | 01 Nov, 2012, 04:28: PM
answered-by-expert Expert Answer
Weightlessness is simply a sensation experienced by an individual when there are no external objects touching one's body and exerting a push or pull upon it. Weightless sensations exist when all contact forces are removed.
Answered by | 01 Nov, 2012, 08:57: PM
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CBSE 9 - Physics
The density of ice is 918kgm-3 and that of sea water id 1,030kgm-3.An iceberg floats with a portion 224 litres outside water. Find the volume of iceberg.
Asked by SHIVASIS MOHANTY | 05 Jan, 2013, 08:53: AM
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CBSE 9 - Physics
You have a bag of cotton and an iron bar, each indicating a mass of 100 kg when measured on a weighing machine. In reality, one is heavier than other. Can you say which one is heavier and why?IN SOME BOOKS THE ANSWER IS THAT COTTON BAG IS HEAVIER AND IN OTHERS IT IS SAID THAT IRON BAR IS HEAVIER.PLEASE TELL ME WHICH ONE IS CORRECT.
Asked by SHIVASIS MOHANTY | 04 Jan, 2013, 09:32: PM
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CBSE 9 - Physics
if we drop a ball into very deep hole in earth then hoe to find the final velocity of the ball just before touching the bottom ?
Asked by | 27 Dec, 2012, 10:59: AM
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CBSE 9 - Physics
a solid weighs 10N in air if it loss in weight when weighed in water is 2N what is density of the solid
Asked by | 21 Nov, 2012, 05:20: PM
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CBSE 9 - Physics
A bucket with water is less heavier when inside water than outside water?WHY?
Asked by | 18 Nov, 2012, 09:52: AM
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CBSE 9 - Physics
what is the difference in the the way in which gravitaion is described in newtonian, relativistic and quantum mechanics?
Asked by | 13 Nov, 2012, 09:16: AM
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CBSE 9 - Physics
Doubt against Archimedes principle..
Asked by | 08 Nov, 2012, 06:48: PM
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CBSE 9 - Physics
thrust
Asked by siddhanth | 06 Nov, 2012, 09:40: PM
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CBSE 9 - Physics
can you explain me what is lactometer?how it works on the basis of archimedes' principle?
Asked by | 06 Nov, 2012, 07:54: PM
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CBSE 9 - Physics
thrust
Asked by siddhanth | 06 Nov, 2012, 07:43: PM
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