In developed nations, the water delivered to homes by pipe is generally potable. select the best answer from the choices provided t f

True is ur answer sorry if i am too late

The given statement is true.

Explanation:

In developed nations, water delivered to homes is purified and passes through different stages to purification so that people will get clean and safe water.

This also prevents any type of diseases cause by drinking dirty or non-purified water. For example, cholera, typhoid, dysentery etc are caused by drinking dirty water.

Thus, we can conclude that the statement in developed nations, the water delivered to homes by pipe is generally potable, is true.

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures