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Quizlet was founded in October 2005 by Andrew Sutherland, who at the time was a 15-year old student, [2] and released to the public in January 2007. [3] Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [4]
Both Quizlet and Slader operate under a freemium business model, and the two are figuring out what a full integration will look like and may adjust pricing. "We help people focus their time and ...
Title page of the 1918 version of the book "Elements of General Science" Elements of General Science is a book written by Otis W. Caldwel and William L. Eikenberry that was first published by Ginn and Company in 1914. [1] A revised version appeared in 1918. [2]
Snap, [6] or jounce, [2] is the fourth derivative of the position vector with respect to time, or the rate of change of the jerk with respect to time. [4] Equivalently, it is the second derivative of acceleration or the third derivative of velocity, and is defined by any of the following equivalent expressions: = ȷ = = =.
An example provided in Slater's original paper is for the iron atom which has nuclear charge 26 and electronic configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 6 4s 2.The screening constant, and subsequently the shielded (or effective) nuclear charge for each electron is deduced as: [1]
Biochemistry is a common university textbook used for teaching of biochemistry. It was initially written by Lubert Stryer and published by W. H. Freeman in 1975. [1] [2] [3] It has been published in regular editions since. [4] [5] [6] It is commonly used as an undergraduate teaching textbook or reference work. [7] [8]
Life, by David E. Sadava et al., is a 1983 biological science textbook, under continual revision, used at many colleges and universities around the United States of America. [1] As of 2024, it is in its twelfth edition. It is published by W.H. Freeman through MacMillan Learning.
Group 10, numbered by current IUPAC style, is the group of chemical elements in the periodic table that consists of nickel (Ni), palladium (Pd), platinum (Pt), and darmstadtium (Ds).