Radius at the Earth is 64× 10^3 km, height at the Mount Everest is 8848 km. If the value of acceleration due to gravity of the Earth is 9.8 m/s calculate the velue of acceleration due to greviay at the top .also find the weight of the body of mass 25 kg on the top of the Mount Everest,
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wavelength divides in half and speed stays the same.

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.