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Colloidal suspensions of nanoparticles of boric acid dissolved in petroleum or vegetable oil can form a remarkable lubricant on ceramic or metal surfaces [65] with a coefficient of sliding friction that decreases with increasing pressure to a value ranging from 0.10 to 0.02.
Hydrochloric acid, also known as muriatic acid or spirits of salt, is an aqueous solution of hydrogen chloride (HCl). It is a colorless solution with a distinctive pungent smell.
Cyberbullying (cyberharassment or online bullying) is a form of bullying or harassment using electronic means. Since the 2000s, it has become increasingly common, especially among teenagers and adolescents, due to young people's increased use of social media. [182] Related issues include online harassment and trolling.
Legal tax avoidance; Base erosion and profit shifting (BEPS) . Double Irish. Single Malt; CAIA; Dutch Sandwich; Tax credit; Tax deduction; Tax exemption; Taxpayer groups; Tax holiday
The symmetry of a carbon dioxide molecule is linear and centrosymmetric at its equilibrium geometry. The length of the carbon–oxygen bond in carbon dioxide is 116.3 pm, noticeably shorter than the roughly 140 pm length of a typical single C–O bond, and shorter than most other C–O multiply bonded functional groups such as carbonyls. [19]
The ultimate tensile strength of a material is an intensive property; therefore its value does not depend on the size of the test specimen.However, depending on the material, it may be dependent on other factors, such as the preparation of the specimen, the presence or otherwise of surface defects, and the temperature of the test environment and material.
Presidential elections were held in the United States on November 8, 1932. Against the backdrop of the Great Depression, incumbent Republican President Herbert Hoover was defeated in a landslide by Democrat Franklin D. Roosevelt, the governor of New York and the vice presidential nominee of the 1920 presidential election.
Various types of potatoes Unprocessed seeds of spelt, a historically important staple food Harvesting Sago pith to produce the starch in Papua New Guinea. A staple food, food staple, or simply staple, is a food that is eaten often and in such quantities that it constitutes a dominant portion of a standard diet for an individual or a population group, supplying a large fraction of energy needs ...