1.) A device that uses

motion in an electric

field to produce an

electric current?

2.) A current consisting of charges that flow in only one direction?

Plz help me with these two questions give both answers and put the numbers giving 10 points and brainliest answer

1. Generator

2. Direct current  

Explanation:  

1.   The Generator is a device that uses energy of motion in a magnetic field to produce electric current.  It converts mechanical energy into electrical energy.  

2. The direct current or DC is the current in which charges flow in one direction. When there is continuous flow of electron tp the positive side from the negative side through a conducting material then the current is said to be  Direct current.

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.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.