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Что (кто) такое normal force - определение
Normal force
.png?width=200 "Figure 2: Weight (''W''), the frictional force (''F''<sub>''r''</sub>), and the normal force (''F''<sub>''n''</sub>) acting on a block. Weight is the product of mass (''m'') and the acceleration of gravity (''g'').")
FORCE EXERTED ON AN OBJECT BY A BODY WITH WHICH IT IS IN CONTACT, AND VICE VERSA
Normal Force; Normal reaction
In mechanics, the normal force F_n is the component of a contact force that is perpendicular to the surface that an object contacts, as in Figure 1. In this instance normal is used in the geometric sense and means perpendicular, as opposed to the common language use of normal meaning "ordinary" or "expected".
Normal order
TYPE OF OPERATOR ORDERING IN QUANTUM FIELD THEORY
Wick ordering; Wick ordered; Normal-order; Normal ordering; Normal order (quantum physics); Normal order (quantum field theory)
In quantum field theory a product of quantum fields, or equivalently their creation and annihilation operators, is usually said to be normal ordered (also called Wick order) when all creation operators are to the left of all annihilation operators in the product. The process of putting a product into normal order is called normal ordering (also called Wick ordering).
Third normal form
NORMALIZING A DATABASE DESIGN TO REDUCE THE DUPLICATION OF DATA AND ENSURE REFERENTIAL INTEGRITY
3NF; Third Normal Form; 3rd normal form
Third normal form (3NF) is a database schema design approach for relational databases which uses normalizing principles to reduce the duplication of data, avoid data anomalies, ensure referential integrity, and simplify data management. It was defined in 1971 by Edgar F.
Примеры употребления для normal force
1. Daudi Bamuwamye lost consciousness on Monday aboard Mission÷ Space, which spins riders in a giant centrifuge that subjects them to twice the normal force of gravity.
2. Two people have died in the last year after going on the ride, which spins in a centrifuge that subjects riders to twice the normal force of gravity.
3. Daudi Bamuwamye lost consciousness Monday aboard "Mission÷ Space," which spins riders in a giant centrifuge that subjects them to twice the normal force of gravity.
4. The sheriff‘s office said the boy did meet the minimum 44–inch height requirement for the ride at the Epcot theme park, which uses centrifugal force to simulate twice the normal force of gravity.
5. The boy‘s body was rigid and his legs stretched out, so she took his hand to reassure him as the rocket–ship ride spun them around, submitting them to twice the normal force of gravity.