way that gymnasts bodies do. It is nothing but physics. Angular momentum is the main physics concept used in gymnastics‚ and this can be seen in events like the vault and giant bar. Angular momentum is the term describing the quantity of angular motion possessed by the gymnast. It is also the product of angular velocity. It is made up of the sum of the angular momentum of the body’s segments. The variables that influence angular momentum are the rotational speed of the gymnast‚ point/center of rotation
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ATOMIC PHYSICS The nuclear atom All matter is made up of atoms which consist of a central nucleus‚ surrounded by electrons. Inside the nucleus are protons and neutrons. Particle Relative mass Charge Location Proton 1840 + Nucleus Neutron 1840 0 Nucleus Electron 1 - Outside nucleus Proton or atomic number (Z) This is the total number of protons in the nucleus of an atom. Nucleon or mass number (A) This is the total number of protons and neutrons in the nucleus of an atom. Note: a nucleon
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of the page 7. Determine the magnetic field strength acting on a positron travelling at 7.31 x 107 m/s experiences a magnetic force of 5.38 x 10-13 N. [0.0460T] The magnetic field strength is 0.0460T. 8. A beam of alpha particles is accelerated across a potential difference of 7.50 KV. They are then passed perpendicularly through a magnetic field and turn a circle with a radius of 15.1 cm. Determine the magnetic field strength. [0.117 T] The magnetic field strength is 0.117 T.
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Gravitation …………………. 61 3. Direct Current ………………….. 71 4. Electrostatics …………………. 90 5. Simple Harmonic Motion ……. 116 6. Waves ………………………… 128 7. Magnetism …………………. 156 8. Electromagnetic Induction …… 162 9. Atomic Physics …………. 184 10. Answers …………. 194 MECHANICS KINEMATICS of LINEAR MOTION Uncertainties of Measurement Power of Ten | Prefix | Abbreviation | 10-18 | atto | a | 10-15 | femto | f | 10-12 | pico
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is displaced 2 cm from its position of rest at right angles to the original direction of the string and then released with zero velocity. Applying the equation ∂2u∂x2=1c2∙∂2u∂t2 with c2=1‚ determine the subsequent motion ux‚t. 3. One end A of an insulated metal bar AB of length 2 m is kept at 0°C while the other end B is maintained at 50°C until a steady state of temperature along the bar is achieved. At t=0‚ the end B is suddenly reduced
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Preliminary Questions 1. When you push on an object‚ the magnitude of the force on the object directly affects it’s motion. If you push harder on the object‚ it’s motion is larger. 2. If we have a bowling ball‚ and a baseball each suspended from a different rope‚ and hit each ball with a full swing of a baseball bat‚ the ball that will have the greatest amount of change in it’s motion will be the baseball. This is true because the baseball has a smaller mass than a bowling ball‚ giving the baseball
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orce. 17. Scalars and Vectors. 18. Representation of Vector Quantities. 19. Addition of Vectors. 20. Subtraction of Vectors. 2. Kinematics of Motion ...823 1. Introduction. 2. Plane Motion. 3. Rectilinear Motion. 4. Curvilinear Motion. 5. Linear Displacement. 6. Linear Velocity. 7. Linear Acceleration. 8. Equations of Linear Motion. 9. Graphical Representation of Displacement with respect to Time. 10. Graphical Representation of Velocity with respect to Time. 11. Graphical Representation
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the yield and ultimate tensile strength) of malleable materials such as Aluminum. In precipitation hardening‚ the formation of a very fine and uniformly distributed second phase particles in the initial phase causes the yield strength of material to increase. These second fine phase in the structure of the materials plays a very important role in the motion of dislocations by impeding their movement with making a defect in the crystal lattice‚ which both causes the higher yield strength into the material
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Carousel: Centripetal Force Imagine spinning a ball on a string around you. The ball is traveling in a circular path. But Newton’s first law states that an object in motion stays in motion and that motion is in a straight path‚ not a circular path. Since the ball is traveling in a circular path‚ an outside force must be acting on the ball - that force is the string. The string is pulling the ball back toward you‚ acting as the centripetal
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