Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 9 Answered

Air is required for burning .there is no air in space.So how is the sun a burning ball of gases how are the gases burning if there is no air and what ignited it .it is said that solar energy is inexhaustable but woudnt the fuel of the sun (gas) be ever finished ?
Asked by | 29 Mar, 2011, 11:28: PM
Expert Answer
dear student
The source of solar energy is nuclear fusion reaction taking place in sun.
Fusion means joining lighter nuclei to make a heavier nucleus, most commonly
hydrogen or hydrogen isotopes to create helium,

It releases a tremendous amount of energy, according to the Einstein equation, as the mass of the product is little less than the sum of the masses of the original individual nuclei.
 Hope this helps.
Such nuclear fusion reactions are the source of energy in the Sun and other stars. It takes considerable energy to force the nuclei to fuse. The conditions needed for this process are extreme – millions of degrees of temperature and millions of pascals of pressure. 
Regards
Team
Topperlearning
 
Answered by | 31 Mar, 2011, 12:53: PM
Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment

Concept Videos

Application Videos

Answered Unanswered My Questions My Answers
CBSE 9 - Physics
give reason. food cooks faster in a pressure cooker
Asked by pramodkumardalal711 | 18 Jun, 2022, 10:19: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
what is energy
Asked by divyanshu.3082007 | 03 Feb, 2022, 05:21: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
an object thrown at a certain angle to the ground moves in a second path and falls back to the ground the initial and the final point of the path of the object lies on the same horizontal line what is the work done by the force of gravity on the object?
Asked by aartilodhi13 | 02 Feb, 2022, 05:18: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
define kinetic energy
Asked by topperlearningforcontent | 31 Jan, 2022, 10:14: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
(a)State Law of Conservation of Energy and express it in the form of an equation for a body of mass m falling from a point A at height h, above the ground at (i) A (ii) B at a height from ground, (iii) C.
Asked by sahasra4050 | 20 Jan, 2022, 08:53: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
An elevator is designed to lift a load of 1000 kg with uniform velocity of 2m/s . Power of the elevator will be?
Asked by tajbindarkaurs | 14 Nov, 2021, 10:19: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
A car of mass 2 kg is moving with speed of 10m/s.  Calculate work done to stop it ?
Asked by atiquzzaman100 | 21 Oct, 2021, 01:35: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
if we increase kinetic energy by 20%, then find percentage increase in linear momentum
Asked by kaziryan.05 | 19 May, 2021, 07:43: AM
ANSWERED BY EXPERT
CBSE 9 - Physics
A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s-2, with what velocity willA ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s-2, with what velocity will it strike the ground? After what time will it strike the ground? it strike the ground? After what time will it strike the ground?
Asked by jeevika.9a | 13 Feb, 2021, 06:00: PM
ANSWERED BY EXPERT
CBSE 9 - Physics
painting is work or not
Asked by harikishortomar | 03 Jan, 2021, 10:52: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Start your hassle free Education Franchisee and grow your business!

Know more
×