LaRoy, Sue
Physical activity assessment in children and adolescents. This article provides a review of the techniques that have been developed for measurement of physical activity in children and adolescents. Physical activi... RR Pate - 《Critical Reviews in Food Science & Nutrition》...
A force is a vector quantity which means it has both magnitude and direction. Read more about force in the article below.
A flame-spread model is analyzed in which heat release occurs at the planar interface of two media, each of which moves with a different but constant veloc... IS Wichman,FA Williams - 《Combustion Science & Technology》 被引量: 82发表: 1983年 ...
Lectures on Some Recent Advances in Physical Science, with a Special Lecture on Force 作者: Tait, Peter Guthrie 出版社: Nabu Press出版年: 2010-1页数: 434定价: $ 40.40ISBN: 9781141938186豆瓣评分 目前无人评价 评价: 写笔记 写书评 加入购书单 分享到 ...
The vibration is caused by the excitation force in the piston chamber. The excitation force acting on the cylinder blocks with the set of pistons has the great impulse on the dynamic response. In the local coordinate system OC-XCYCZC, the force and moment acting on the rotor assembly can ...
Computer simulations have come to play a dominant role in modern science. They fill the gap between theory and experiment. In many cases, they represent the only means of making quantitative progress in the study of complex systems or of a simple system with complex behaviour. Computer ...
the friction pair: the components and their relevant properties of mechanical, physical, chemical aspects and geometry; ■ the interface: the formation and breakaway of contact junctions in multiple scales; ■ the operational variables: load (pressure) and speed and time; ■ the environmental variabl...
Inprinciples of physical science: Laws of motion Newton’s second law quantifies the concept of force, as well as that of inertia. A body acted upon by a steady force suffers constant acceleration. Thus, a freely falling body or a ball rolling down a plane has constant acceleration, as ...
Strong force, a fundamental interaction of nature that acts between subatomic particles of matter. The strong force binds quarks together in clusters to make more-familiar subatomic particles, such as protons and neutrons. It also holds together the atom