diagram of forces
31Song Dynasty — This article is about the Northern and Southern Song Dynasties. For the Southern Dynasty, see Liu Song Dynasty. Song 宋 ← …
32climate — /kluy mit/, n. 1. the composite or generally prevailing weather conditions of a region, as temperature, air pressure, humidity, precipitation, sunshine, cloudiness, and winds, throughout the year, averaged over a series of years. 2. a region or… …
33Stalemate — Example of stalemate a b c d e f g h …
34Non-uniform circular motion — Classical mechanics Newton s Second Law History of classical mechanics  …
35Bucket argument — Isaac Newton s rotating bucket argument (also known as Newton s bucket ) was designed to demonstrate that true rotational motion cannot be defined as the relative rotation of the body with respect to the immediately surrounding bodies. It is one… …
36Virtual particle — In physics, a virtual particle is a particle that exists for a limited time and space, introducing uncertainty in their energy and momentum due to the Heisenberg Uncertainty Principle. (Indeed, because energy and momentum in quantum mechanics are …
37Magnetic field — This article is about a scientific description of the magnetic influence of an electric current or magnetic material. For the physics of magnetic materials, see magnetism. For information about objects that create magnetic fields, see magnet. For …
38Truss — For other uses, see Truss (disambiguation). In architecture and structural engineering, a truss is a structure comprising one or more triangular units constructed with straight members whose ends are connected at joints referred to as nodes.… …
39List of Toaru Majutsu no Index characters — This is a list of characters from the light novel series Toaru Majutsu no Index as well as its manga adaptation, spin off manga (Toaru Kagaku no Railgun), and both series anime adaptations. The series primarily takes place in Academy City, a city …
40Pulley — For the band, see Pulley (band). For the village, see Pulley, Shropshire. For the American photographer, see Gerald P. Pulley. Pulley Pulleys on a ship. In this context, pulleys are usually known as blocks. Classification …
