Static Electric Force
Static Electric Force - Related Videos
01:05
Static and Kinetic Frictional Force
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2023
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice. However, if two systems are in contact and are stationary relative to one...
05:09
Static Atomic Force Microscopy to Visualize and Characterize Assembled Nucleosomes
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2025
In this video, we demonstrate static atomic force microscopy to visualize assembled nucleosomes. This high-resolution imaging technique allows the study of the nucleosome structure.
01:24
Comparison Between Electrical And Gravitational Forces
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2023
There are four fundamental forces in nature: the gravitational force, the electromagnetic force, the strong nuclear force, and the weak nuclear force. To compare the numerical strengths of the first two, take two particles of the same kind. Since electrons are fundamental particles, they are a good example. Since both are inverse square law forces, the distance gets canceled when the ratio of the two forces is considered. Instead, the ratio of the electrical and gravitational forces depends on...
10:23
Electric Fields
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2023
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN An electric field is generated by a charged object (referred to as the source charge) in the space around it, and represents the ability to exert electric force on another charged object (referred to as the test charge). Represented by a vector at any given point in the space, the electric field is the electrical force per unit test charge placed at that point (the force...
08:12
Pressure Transducer: Calibration Using a Pitot-static Tube
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2023
Source: Shreyas Narsipur, Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC Fluid pressure is an important flow characteristic that is required to determine the aerodynamics of a system. One of the oldest and still existing pressure measurement systems is the manometer due to its accuracy and simplicity of operation. The manometer is generally a U-shaped glass tube that is partially filled with liquid, as shown in Figure 1. The U-tube manometer requires no...
FAQs
Coulomb’s law links the force to two measurable factors: the magnitudes of the charges and the distance between them. Increasing either charge strengthens the interaction, while increasing separation reduces it according to an inverse-square relationship. This dependence lets physicists predict how strongly charged objects will attract or repel one another under static conditions.
An electric field provides the physical framework through which a stationary charge influences another charged object. The resulting force depends on the field at the object’s location and on the object’s charge. Examining fields therefore helps describe interactions across space rather than treating attraction or repulsion as direct contact between materials.
Materials can gain or lose electrons through friction, contact, or induction, producing charged objects that then experience electrostatic interactions. These processes represent different ways a charge condition can arise before the force is examined. Distinguishing the charging process helps connect an observed attraction or repulsion with the material history that created it.
A basic analysis identifies the charges, measures their separation, and applies Coulomb’s law to determine the force relationship. The charge signs indicate whether the interaction is attractive or repulsive, while the charge magnitudes and distance determine its strength. This approach provides a quantitative basis for interpreting static electric force in physics investigations.
Electrostatic discharge is one practical phenomenon explained by the interaction of stationary charges. Charge can accumulate through processes such as friction, contact, or induction, then produce a noticeable discharge when conditions change. Studying the underlying force connects electron transfer and charge buildup with an observable electrical event.
The behavior of charged matter provides a physical basis for devices that store, manipulate, or move electric charge. Capacitors rely on controlled charge arrangements, while photocopiers use electrostatic effects to handle charged particles during image production. The same principles also support technologies that control or separate charged matter in research and practical systems.