There is no despersion of light when it passes through rectangular glass slab, why??​

the body's situation won't change the forces are equal opposit and on the same body

the current is 0.6

voltage ÷ resistance = current

so 12 ÷ 20 = 0.6

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.