Please answer this: I know that the answer to the question "According to Han, what is math?" is in "Three Han mathematical treatises still exist. These are the Book on Numbers and Computation, the Arithmetical Classic of the Gnomon and the Circular Paths of Heaven and the Nine Chapters on the Mathematical Art. Han-era mathematical achievements include solving problems with right-angle triangles, square roots, cube roots, and matrix methods, finding more accurate approximations for pi, providing mathematical proof of the Pythagorean theorem, use of the decimal fraction, Gaussian elimination to solve linear equations, and continued fractions to find the roots of equations.". Can you tell me what it is?
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Answer: Art

Please answer this: I know that the answer to the question "How would a McLeaod gague be used?" is in "Hydrostatic gauges (such as the mercury column manometer) consist of a vertical column of liquid in a tube whose ends are exposed to different pressures. The column will rise or fall until its weight is in equilibrium with the pressure differential between the two ends of the tube. The simplest design is a closed-end U-shaped tube, one side of which is connected to the region of interest. Any fluid can be used, but mercury is preferred for its high density and low vapour pressure. Simple hydrostatic gauges can measure pressures ranging from 1 torr (100 Pa) to above atmospheric. An important variation is the McLeod gauge which isolates a known volume of vacuum and compresses it to multiply the height variation of the liquid column. The McLeod gauge can measure vacuums as high as 106 torr (0.1 mPa), which is the lowest direct measurement of pressure that is possible with current technology. Other vacuum gauges can measure lower pressures, but only indirectly by measurement of other pressure-controlled properties. These indirect measurements must be calibrated via a direct measurement, most commonly a McLeod gauge.". Can you tell me what it is?
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Answer: Other vacuum gauges can measure lower pressures, but only indirectly by measurement of other pressure-controlled properties. These indirect measurements must be calibrated

Please answer this: I know that the answer to the question "Why were minor Indian laborers motivated to work in factories?" is in "On 23 June 1757, the English East India Company defeated Siraj-ud-Daula, the Nawab of Bengal, in the Battle of Plassey. The British thus became masters of east India (Bengal, Bihar, Orissa) a prosperous region with a flourishing agriculture, industry and trade. This led to a large amount of children being forced into labour due to the increasing need of cheap labour to produce large numbers of goods. Many multinationals often employed children because that they can be recruited for less pay, and have more endurance to utilise in factory environments. Another reason many Indian children were hired was because they lack knowledge of their basic rights, they did not cause trouble or complain, and they were often more trustworthy. The innocence that comes with childhood was utilised to make a profit by many and was encouraged by the need for family income.". Can you tell me what it is?
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Answer:
the need for family income