Author: Tru Physics
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Torque
Introduction Torque, also known as moment or moment of force, is a measure of the force that can cause an object to rotate around an axis. Torque is a vector quantity, meaning it has both magnitude and direction. Definition and Formula The torque due to a force acting at a point with position vector relative…
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Transverse Waves
Introduction Transverse waves are waves in which the direction of displacement of the medium’s particles is perpendicular to the direction of the wave propagation. Examples of transverse waves include light waves, radio waves, and waves on a stretched string. This is in contrast to longitudinal waves for which the particle displacement is parallel to the…
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Uniform Circular Motion
Introduction Uniform circular motion refers to the motion of an object traveling in a circular path at a constant speed. While the speed remains constant, the direction of the velocity vector changes continuously, resulting in a non-zero acceleration. Velocity in Uniform Circular Motion The velocity of an object in uniform circular motion is given by:…
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Virtual Images
Introduction A virtual image is a type of image formed when the outgoing rays from a point on an object diverge. The apparent intersection of these diverging rays occurs behind the plane of the mirror or lens, thus giving the illusion that light comes from this intersection point, even though the light is actually diverging.…
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Viscosity
Introduction Viscosity is a measure of a fluid’s resistance to flow. It describes the internal friction of a moving fluid. A fluid with large viscosity resists motion because its molecular makeup gives it a lot of internal friction. A fluid with low viscosity flows easily because its molecular makeup results in very little friction when…
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Visible Light
Introduction Visible light is the portion of the electromagnetic spectrum that is visible to the human eye. It occupies a very small portion of the electromagnetic spectrum, roughly between the wavelengths of 400 and 700 nanometers. Electromagnetic Spectrum and Visible Light The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation. It…
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Work-Energy Theorem
Introduction The work-energy theorem is a fundamental principle in physics. It states that the work done on an object is equal to the change in its kinetic energy. This theorem is a direct consequence of Newton’s second law of motion. The Work-Energy Theorem Equation The work-energy theorem can be mathematically stated as: where: The kinetic…
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Xerography (Electrostatic Printing)
Xerography, also known as electrostatic printing, is a dry photocopying technique invented by Chester Carlson in 1938. It’s a process that uses electrostatic charges to create an image, then uses heat to permanently set the image onto paper or other material. Basic Principles of Xerography Xerography operates on the principle of photoconductivity, where certain materials…
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Zonal Harmonics
Zonal harmonics are a special class of spherical harmonics, which are functions that play a vital role in many areas of physics, including quantum mechanics, electrodynamics, and many areas of theoretical physics. Introduction to Spherical Harmonics Spherical harmonics are functions defined on the surface of a sphere that solve the angular part of Laplace’s equation.…
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Nuclear Magnetic Resonance (NMR)
Introduction Nuclear Magnetic Resonance (NMR) is a powerful and theoretically complex analytical tool that exploits the magnetic properties of certain atomic nuclei. It determines the physical and chemical properties of atoms or the molecules in which they are contained. Nuclear magnetic resonance (NMR) is a method that exploits the magnetic properties of certain types of…