The answer is 4.
The speed of light is faster in the air than in the glass, because a wavelength can be refracted in glass. Because the speed increases when the light wave passes from glass into air, the wavelength will also increase.
When acid reacts with water, the hydroxide ion is formed I think it is true.
iAnswer:
its like a engine they are used for the same thing but different places
Explanation:
Explanation:
Moral duties are the duties performed by the people on the basis of humanity and moral values. The following are some of the moral duties :
- Respecting elders and loving juniors
- Helped the needy , poor and helpless people
- Having friendly behavior with others
- Respecting everyone as human being
- Being obedient and respectful to parents , elderly people and teachers.
- Living ideal and respectful life
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