You have been hired as an expert witness by an attorney for a trial involving a traffic accident. the attorney's client, the plaintiff in this case, was traveling eastbound toward an intersection at 14.0 m/s as measured just before the accident by a roadside speed meter, and as seen by a trustworthy witness. as the plaintiff entered the intersection, his car was struck by a northbound driver, the defendant in this case, driving a car with identical mass to the plaintiff's. the vehicles stuck together after the collision and left parallel skid marks at an angle of θ = 62.4° north of east, as measured by accident investigators. the defendant is claiming that he was traveling within the 35 mi/h speed limit. what advice do you give to the attorney? options: the defendant was traveling at 31.3 mi/h. the defendant was traveling at 45.6 mi/h. the defendant was traveling at 59.9 mi/h.

current flows in a wire

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.