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Newton's first law expresses the principle of inertia: the natural behavior of a body is to move in a straight line at constant speed. A body's motion preserves the status quo, but external forces can perturb this. The modern understanding of Newton's first law is that no inertial observer is privileged over any other.
A hair whorl. The hairy ball theorem of algebraic topology (sometimes called the hedgehog theorem in Europe) [ 1] states that there is no nonvanishing continuous tangent vector field on even-dimensional n -spheres. [ 2][ 3] For the ordinary sphere, or 2‑sphere, if f is a continuous function that assigns a vector in R3 to every point p on a ...
In science, an inverse-square law is any scientific law stating that the observed "intensity" of a specified physical quantity is inversely proportional to the square of the distance from the source of that physical quantity. The fundamental cause for this can be understood as geometric dilution corresponding to point-source radiation into ...
Specialty. Gastroenterology. Flatulence is the expulsion of gas from the intestines via the anus, commonly referred to as farting. "Flatus" is the medical word for gas generated in the stomach or bowels. [ 1] A proportion of intestinal gas may be swallowed environmental air, and hence flatus is not entirely generated in the stomach or bowels.
Figure 2: Weight (W), the frictional force (F r), and the normal force (F n) acting on a block.Weight is the product of mass (m) and the acceleration of gravity (g).In the case of an object resting upon a flat table (unlike on an incline as in Figures 1 and 2), the normal force on the object is equal but in opposite direction to the gravitational force applied on the object (or the weight of ...
While no va does mean "doesn't go" in Spanish, nova was easily understood to mean "new". [6] The common image of Santa Claus (Father Christmas) as a jolly large man in red garments was not created by The Coca-Cola Company as an advertising tool. Santa Claus had already taken this form in American popular culture by the late 19th century, long ...
Three-body problem. Approximate trajectories of three identical bodies located at the vertices of a scalene triangle and having zero initial velocities. The center of mass, in accordance with the law of conservation of momentum, remains in place. In physics, specifically classical mechanics, the three-body problem involves taking the initial ...
1) More crunches equal a flatter tummy. The truth is that everyone has ab muscles that stay hidden underneath a thick layer of fat. The key is to focus on burning fat. 2) Starving yourself leads ...