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[Audio] Physics in everyday life. Physics in everyday life.

[Audio] On the planet in which we live i.e earth, there are infinite number of interesting events taking place.At some point in our life, our curiosity would have pushed us to ask questions how these events are taking place?The answer to these questions is PHYSICS.Physics is a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force..

[Audio] PHYSICS AT HOME. Physics at home.

[Audio] ALARM CLOCK. C Program Files x86 Microsoft Office MEDIA CAGCAT10 j0234131 wmf.

[Audio] The buzzing sound of an alarm clock helps you wake up in the morning as per your schedule. The sound is something that you can't see, but hear or experience. Physics studies the origin, propagation, and properties of sound. It works on the concept of Quantum Mechanics..

[Audio] BALL POINT PEN. Ball point pen.

[Audio] Whether you are at your workplace or in your school, a Ball Point Pen is your weapon. Had Physics not been there, you would not have able to write with a Ball Point Pen on a paper. In this case, the concept of gravity comes into play. As your pen moves across the paper, the ball turns and gravity forces the ink down onto the top of the ball where it is transferred onto the paper..

[Audio] PHYSICS IN HOSPITAL. PHYSICS IN HOSPITAL.

[Audio] Medical physics is the application of physics concepts, theories, and methods to medicine and healthcare. Traditionally Medical Physicists are found in the following healthcare specialties: radiation oncology (also known as radiotherapy or radiation therapy), diagnostic and interventional radiology (also known as medical imaging), nuclear medicine, and radiation protection. Medical physics of radiation therapy can involve work such as dosimetry, linac quality assurance, and brachytherapy. Medical physics of diagnostic and interventional radiology involves medical imaging techniques such as magnetic resonance imaging, ultrasound, computed tomography and x-ray. Nuclear medicine will include positron emission tomography and radionuclide therapy. However one can find Medical Physicists in many other areas such as physiological monitoring, audiology, neurology, neurophysiology, cardiology and others..

[Audio] PHYSICS IN AMUSEMENT PARK. PHYSICS IN AMUSEMENT PARK.

[Audio] ROLLER COASTER. ROLLER COASTER.

[Audio] A roller coaster is a machine that uses gravity and inertia to send a train of cars along a winding track. This combination of gravity and inertia, along with G-forces and centripetal acceleration give the body certain sensations as the coaster moves up, down, and around the track. The forces experienced by the rider are constantly changing, leading to feelings of joy in some riders and nausea in others.it has many variation, but all involve going around loops, bends, and twists at high speed.The typical roller coaster works by gravity. There are no motors used to power it during the ride. Starting from rest, it simply descends down a steep hill, and converts the (stored) gravitational potential energy into kinetic energy, by gaining speed. A small amount of the energy is lost due to friction, which is why it's impossible for a roller coaster to return to its original height after the ride is over. The roller coaster uses a motorized lift system to return to its original position at the top of the initial hill, ready for the next ride..

[Audio] FERRIS WHEEL. FERRIS WHEEL.

[Audio] The Ferris wheel consists of an upright wheel with passenger gondolas ( seats) attached to the rim. These gondolas can freely pivot at the support where they are connected to the Ferris wheel. As a result, the gondolas always hang downwards at all times as the Ferris wheel spins. Ferris wheel physics is directly related to centripetal acceleration, which results in the riders feeling "heavier" or "lighter" depending on their position on the Ferris wheel..

[Audio] PHYSICS ON ROAD. PHYSICS ON ROAD.

[Audio] When you get ready for your office/school, whatever medium of commutation is, you certainly have to walk up to a certain distance. You can easily walk is just because of Physics. While you have a walk in a park or on a tar road, you have a good grip without slipping because of a sort of roughness or resistance between the soles of your shoes and the surface of the road. This resistance, which is responsible for the grip, is called " Friction" or " Traction."Have you ever noticed that on which principle does your car seat-belt works? Well, it's again Physics. When you tighten your car seat-belt, it works on the concept of " Inertia." Inertia is the unwillingness or laziness of a body to change its state of rest or motion. In case of a car collision, your seat-belt helps prevent your body from moving in a forward direction; as your body resists being stopped because of inertia of motion.Driving a car requires a basic understanding of the principles of physics, whether the driver is conscious of them or not. For instance, the balance of a car changes as the car accelerates, decelerates or turns. To keep the car on the road, the driver must anticipate these forces acting on the car and make adjustments..

[Audio] PHYSICS IN NATURE. PHYSICS IN NATURE.

[Audio] Lightning is the result of the build up of electrostatic charge in clouds. Positive and negative charges separate, negative usually towards the bottom of the cloud, while positive goes to the top. After a certain amount of time, the negative charge leaps, connecting with either another cloud or even the ground. Relating to electric fields, the stronger the field, the more likely lightning is attracted to the ground. If field lines are closer together the field in that area is stronger and plausibility of a lightning strike is higher.The electrical discharge from a cloud will travel the path of least resistance. In the case of hitting the ground, the strike takes a series of steps to develop. At the bottom of the cloud, where the negatively charged parts hover, a "stepped ladder" forms. This is what gives lightning its forked look..

[Audio] PHYSICS IN WARFARE. PHYSICS IN WARFARE.

[Audio] From the viewpoint of physics ( dynamics, to be exact), a firearm, as for most weapons, is a system for delivering maximum destructive energy to the target with minimum delivery of energy on the shooter.[ citation needed] The momentum delivered to the target, however, cannot be any more than that (due to recoil) on the shooter. This is due to conservation of momentum, which dictates that the momentum imparted to the bullet is equal and opposite to that imparted to the gun-shooter system.Although guns may not be everyday things for many of us, gun recoil is certainly something we're aware of (at least those of us that don't make Hollywood action films with guns whose recoil would instantly kill the person firing them!). Gun recoil is a result of momentum conservation, which is an extremely important fundamental principle. Newton was talking about momentum conservation when he wrote "every action has an equal and opposite reaction". However, the physics behind all guns remain the same. Weapons such as cannons, shotguns and rifles, work on the basic idea of conservation of momentum and the change in energy from potential to kinetic..

[Audio] PHYSICS IN SPORTS. PHYSICS IN SPORTS.

[Audio] physics and sports are intimately connected. This is because every sport's discipline depends on the ability of an athlete to exercise a force, and a force is one of the key elements of Newton's laws of motion and other elementary physics concepts. Work and energy are among the most important concepts of physics. Both, work and energy, play an important role in sports.From swimming to sports gear, physics principles are at the heart of athleticsIn physics, work is defined as the result of a force moving an object a certain distance. Thus, force and work are directly proportional to each other. In addition, the concepts of work and energy are closely related. Hence, work transfers energy from one place to another or one form to another..

[Audio] Thank you for watching. EFFORTS BY – VEDIKA TUTEJA(XII-F).