Question: In 2004, worldwide sales of audio CDs, CD-ROMs and CD-Rs reached about 30 billion discs. By 2007, 200 billion CDs had been sold worldwide. CDs are increasingly being replaced by other forms of digital storage and distribution, with the result that audio CD sales rates in the U.S. have dropped about 50% from their peak; however, they remain one of the primary distribution methods for the music industry. In 2014, revenues from digital music services matched those from physical format sales for the first time.
Try to answer this question if possible: In 2004 how many CDs had been sold around the world?
Answer: 30 billion
Question: The difference in the above factors for the case of θ=0 is the reason that most broadcasting (transmissions intended for the public) uses vertical polarization. For receivers near the ground, horizontally polarized transmissions suffer cancellation. For best reception the receiving antennas for these signals are likewise vertically polarized. In some applications where the receiving antenna must work in any position, as in mobile phones, the base station antennas use mixed polarization, such as linear polarization at an angle (with both vertical and horizontal components) or circular polarization.
Try to answer this question if possible: If you were to develop a signal to be used with mobile phones what would be an effective antenna type?
Answer: circular polarization.
Question: The deeper ancestral demography of Bermuda's population has been obscured by the ethnic homogenisation of the last four centuries. There is effectively no ethnic distinction between black and white Bermudians, other than those characterising recent immigrant communities. In the 17th century, this was not so. For the first hundred years of settlement, white Protestants of English heritage were the distinct majority, with white minorities of Irish (the native language of many of whom can be assumed to have been Gaelic) and Scots sent to Bermuda after the English invasions of their homelands that followed the English Civil War. Non-white minorities included Spanish-speaking, free (indentured) blacks from the West Indies, black chattel slaves primarily captured from Spanish and Portuguese ships by Bermudian privateers, and Native Americans, primarily from the Algonquian and other tribes of the Atlantic seaboard, but possibly from as far away as Mexico. By the 19th century, the white ethnically-English Bermudians had lost their numerical advantage. Despite the banning of the importation of Irish, and the repeated attempts to force free blacks to emigrate and the owners of black slaves to export them, the merging of the various minority groups, along with some of the white English, had resulted in a new demographic group, "coloured" (which term, in Bermuda, referred to anyone not wholly of European ancestry) Bermudians, gaining a slight majority. Any child born before or since then to one coloured and one white parent has been added to the coloured statistic. Most of those historically described as "coloured" are today described as "black", or "of African heritage", which obscures their non-African heritage (those previously described as "coloured" who were not of African ancestry had been very few, though the numbers of South Asians, particularly, is now growing. The number of persons born in Asian countries doubled between the 2000 and the 2010 censuses), blacks have remained in the majority, with new white immigration from Portugal, Britain and elsewhere countered by black immigration from the West Indies.
Try to answer this question if possible: Anyone in Bermuda that is not considered 100% of European heritage is referred to as what?
Answer: coloured
Question: Throughout the universe, hydrogen is mostly found in the atomic and plasma states whose properties are quite different from molecular hydrogen. As a plasma, hydrogen's electron and proton are not bound together, resulting in very high electrical conductivity and high emissivity (producing the light from the Sun and other stars). The charged particles are highly influenced by magnetic and electric fields. For example, in the solar wind they interact with the Earth's magnetosphere giving rise to Birkeland currents and the aurora. Hydrogen is found in the neutral atomic state in the interstellar medium. The large amount of neutral hydrogen found in the damped Lyman-alpha systems is thought to dominate the cosmological baryonic density of the Universe up to redshift z=4.
Try to answer this question if possible: The neutral hydrogen found in the damped Lyman-alpha systems dominates what?
Answer:
cosmological baryonic density of the Universe