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However, a heavier bob helps to keep the pendulum moving smoothly until it receives its next push from the clock's escapement mechanism. That increases the pendulum's Q factor, making the motion of the pendulum more independent of the escapement and the errors it introduces, leading to increased accuracy. On the other hand, the heavier the bob ...
To reduce body heat, the body must remove metabolically produced heat by sweating (also known as evaporative cooling). Heat dissipation by sweat evaporation can lead to significant bodily water loss. [11] A marathon runner can lose water adding up to about 8% of body weight. [6] Fluid replacement is limited, but can help keep internal ...
The energy that a physical body possesses due to its motion, defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. The body continues to maintain this kinetic energy unless its velocity changes. Contrast potential energy. Kirchhoff's circuit laws. Also called Kirchhoff's rules or simply Kirchhoff's laws.
Heavy metals is a controversial and ambiguous term [2] for metallic elements with relatively high densities, atomic weights, or atomic numbers.The criteria used, and whether metalloids are included, vary depending on the author and context and it has been argued that the term "heavy metal" should be avoided.
Aluminium is a soft, lightweight, malleable metal. The yield strength of pure aluminium is 7–11 MPa, while aluminium alloys have yield strengths ranging from 200 MPa to 600 MPa. Aluminium has about one-third the density and stiffness of steel. It is ductile, and easily machined, cast, and extruded.
Physical activity refers to any body movement that burns calories. “Exercise,” a subcategory of physical activity, refers to planned, structured, and repetitive activities aimed at improving physical fitness and health. [1] Insufficient physical activity is the most common health issue in the world.
At sprinting speeds of 8.0, 9.0 and 10.0 m/s, Pistorius produced longer foot to ground contact times, shorter leg swing times, and lower average vertical forces than able bodied sprinters. The team concluded that running on the blades appears to be physiologically similar but mechanically different from running with biological legs.
In physics, a body force is a force that acts throughout the volume of a body. [1] Forces due to gravity , electric fields and magnetic fields are examples of body forces. Body forces contrast with contact forces or surface forces which are exerted to the surface of an object.