Contact forces are those types of forces that result when the two interacting objects are perceived to be physically contacting each other. Examples of contact forces include frictional forces, tensional forces, normal forces, air resistance forces, and applied forces. Not only do electrostatics permeate the events of everyday life, without the forces associated with static electricity, life as we know it would be impossible. Electrostatic forces - both attractive and repulsive in nature - hold the world of atoms and molecules together in perfect balance. Without this electric force, material reality at the macroscopic level of perception would not exist.
Just as human beings have eyes for the sensory detection of light and color, so we are equipped with ears for the detection of sound waves. We seldom take the time to ponder the characteristics and behaviors of sound and the mechanisms by which sounds are produced, propagated, and detected. Sound is a wave that is created by vibrating objects and propagated through a medium from one location to another.
As light travels through a given medium, it travels in a straight line. However, when light passes from one medium into a second medium, or through a lens, the light path bends, and refraction takes place. The refraction occurs precisely at the boundary. Once the light has crossed the boundary between the two media, it continues to travel in a straight line. Only now, the direction of that line is different than it was in the former medium. When viewing an object, if light from that object changes media on the way to your eye, a visual distortion is likely to occur.
Nikola Tesla had invented a very interesting one-way valvular conduit. Let's understand the physics of the undulating fluid dynamics of the flow.
This animation will describe the production of a magnetic field around a current carrying circular coil, and discuss finding the direction of magnetic field lines thus generated.
Physical changes of state and chemical changes explained. A chemical reaction results via changes in electron orbital energy states, while a physical change takes place due to interactions of molecular forms but not an alteration of chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting, whereas some physical changes are boiling, melting, freezing, and shredding.
Archimedes' principle, physical law of buoyancy, discovered by the ancient Greek mathematician and inventor Archimedes, stating that any body completely or partially submerged in a fluid (gas or liquid) at rest is acted upon by an upward, or buoyant, force, the magnitude of which is equal to the weight of the fluid.
Mechanical engineers typically need a bachelor's degree in mechanical engineering or mechanical engineering technology. In the US, most undergraduate mechanical engineering programs are accredited by the Accreditation Board for Engineering and Technology (ABET). Mechanical engineering programs usually include courses in mathematics and life and physical sciences, as well as engineering and design. Mechanical engineering technology programs focus less on theory and more on the practical application of engineering principles. They may emphasize internships and co-ops to prepare students for work in industry.
This website is not affiliated with any educational organization, and all trademarks are the exclusive property of the respective owners. Kooksta.com is the work of a group of students in Bangkok, and all copyrighted works on this website are offered for educational purposes only, governed by the four-factor rule, section 107 of the US Copyright Act, 1976.