An uncharged conductor has a hollow cavity inside of it. Within this cavity there is a charge of +10 mu C that does not touch the conductor. There are no other charges in the charges in the vicinity. Which statement about this conductor is true? A) The inner surface of the conductor carries a charge of -10 mu C and its outer surface carries no excess charge. B) The inner and outer surfaces of the conductor each contain charges of -5 mu C. C) The net electric field within the material of the conductor points away from the +10 mu C charge. D) The outer surface of the conductor contains +10 mu C of charge and the inner surface contain -10 mu

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

need to see circuit to get time constant

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.