Teams a and b are in a tug-of-war challenge. team a wins the challenge.

what can be said about team a?

a. the net force was in their direction.

b. they exerted a net force of zero.

c. the net force was opposite their direction.

d. they had the heavier team.

A. The net force was in their direction.

Explanation:

In the game of tug of war the two teams will pull the two ends of the rope with different forces.

When the two teams will pull the two ends of the rope then the team who win is the one who pull the rope towards them.

so here in order to win Team A we know that team A has to pull the rope towards them.

So it must have more force towards them.

So net force is always towards team A in order to win the game

So here correct answer will be

A. The net force was in their direction.

the answer is c i did the same question so i know that's right!

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.