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For example, a 10 cm (3.9 in) circular would have a maximum precision approximately equal to a 31.4 cm (12.4 in) ordinary slide rule. Circular slide rules also eliminate "off-scale" calculations, because the scales were designed to "wrap around"; they never have to be reoriented when results are near 1.0—the rule is always on scale.
Here the trick item is an inconspicuous word easily overlooked by the examinee. Hopkins et al. advise against such kind of questions during tests. [6] Other types of trick question contain a word that appears to be irrelevant, but in fact provides a clue. [7] Luke 20 contains what is described as a "trick question" of Sadducees to Jesus: [8]
An excited state of the 12 C nucleus exists a little (0.3193 MeV) above the energy level of 8 Be + 4 He. This is necessary because the ground state of 12 C is 7.3367 MeV below the energy of 8 Be + 4 He; a 8 Be nucleus and a 4 He nucleus cannot reasonably fuse directly into a ground-state 12 C nucleus.
Ancient Egyptian mathematicians had a grasp of the principles underlying the Pythagorean theorem, knowing, for example, that a triangle had a right angle opposite the hypotenuse when its sides were in a 3–4–5 ratio. [60] They were able to estimate the area of a circle by subtracting one-ninth from its diameter and squaring the result:
Hand size and foot size do not correlate with human penis size, but finger length ratio may. While pregnancies from sex between first cousins do carry a slightly elevated risk of birth defects, this risk is often exaggerated. The risk is 5–6% (similar to that of a woman in her early 40s giving birth), compared with a baseline risk of 3–4%.