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The Richter scale [1] (/ ˈ r ɪ k t ər /), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". [3]
M E can be found out only by dividing G M E by G, and G is known only to a relative uncertainty of 2.2 × 10 −5, [12] so M E will have the same uncertainty at best. For this reason and others, astronomers prefer to use G M E , or mass ratios (masses expressed in units of Earth mass or Solar mass ) rather than mass in kilograms when ...
The Piano Quintet in G minor, JS 159, is a five-movement chamber piece for two violins, viola, cello, and piano [3] written in 1890 by the Finnish composer Jean Sibelius. When composing the piece, Sibelius replaced the original Movement IV (marked Vivace ) with a scherzo ( Vivacissimo ); the earlier Vivace is extant.
One g is the force per unit mass due to gravity at the Earth's surface and is the standard gravity (symbol: g n), defined as 9.806 65 metres per second squared, [5] or equivalently 9.806 65 newtons of force per kilogram of mass.
The gravitational constant appears in the Einstein field equations of general relativity, [4] [5] + =, where G μν is the Einstein tensor (not the gravitational constant despite the use of G), Λ is the cosmological constant, g μν is the metric tensor, T μν is the stress–energy tensor, and κ is the Einstein gravitational constant, a ...
A moderate energy density would be 1.6 to 3 calories per gram (7–13 kJ/g); salmon, lean meat, and bread would fall in this category. Foods with high energy density have more than three calories per gram (>13 kJ/g) and include crackers, cheese, chocolate, nuts, [10] and fried foods like potato or tortilla chips.
The resulting scale is, however, minor in quality, because, as the D becomes the new tonal centre, the F a minor third above the D becomes the new mediant, or third degree. Thus, when a triad is built upon the tonic, it is a minor triad. The modern Dorian mode is equivalent to the natural minor scale (or the Aeolian mode) but with
The lower limit for "heavyweight" was established in 1948 at 81 kg. When a new limit of 91+ kg was established in 1984, the name "heavyweight" was kept by the 81+ kg class, and the 91+ kg class was named "super heavyweight", a name not currently used in professional boxing. Classes are as follows: [16]