RESUME Units of area = cm2‚ ft2 Units of volume = cm3‚ ft3 Type of wave: heat‚ sound‚ magnetic‚ light. -All waves carry energy from one location to another Sound waves (acoustic waves): Travels through a medium Are mechanical Are longitudinal Generally travels in a straight line Are best described as a series of compressions and rarefactions. Diagnostic ultrasound: uses mechanical
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Case Study: Does the Sun’s Angle Affect the Output Of a Solar Cell? Abstract During the experiment to determine Solar Cell Energy‚ one unit of flexible solar cells was exposed to solar radiation at different angles in one axis of rotation. The cells were attached to a adjustable plane with a protractor that acted like a “see-saw” to adjust the angle of the solar cells to the Sun. Around the plane‚ a column of cardboard was constructed with black fabric covering the inside
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The Law of Reflection states that the angle of incidence is always equal to the angle of reflection in a plane mirror‚ and that the incident ray‚ the normal‚ and the reflective ray all lie on the same plane. By placing each plane mirror at a 45 degree angle at each corner the tube‚ light entering from one end from a light source (for example‚ a light bulb in in the store) will change 90 degrees in
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QUESTION BANK – LIGHT 01. How do we see the things in light? 02. Write the different properties of light? 03. What are the different optical phenomena that takes place due to light? 04. Deflection of light? 05. State laws of reflection of light? 06. What are the properties of the image formed by a plane mirror? 07. What are the two types of spherical mirrors? 08. What is a concave mirror and convex mirror? 09. Define the following of a spherical mirror?
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distribution on an aerofoil and its variation with incidence. Introduction: An aerofoil is the two-dimensional cross section of a wing‚ tail or helicopter rotor blade. The lift and pitching moment on an aerofoil is determined by the pressure distribution on it. The pressure distribution changes with the angle of incidence. Understanding the behaviour of aerofoils requires some understanding of the variation of the pressure distribution with incidence. Apparatus: This experiment uses a pressure
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T. 34. Refraction is a bending that occurs when a wave moves from one medium to another at an angle and changes speed. _________________________ F. 40. A wave bending as it passes a point of land is an example of refraction. ___diffraction______________________ 43. The __amplitude__________________ of a mechanical wave is a direct measure of its energy. Short Answer Use the diagram to answer each question. 61. What does the person transfer to the rope by pulling it up and down at point
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direction of a wave due to a change in its transmission medium. Due to change of medium‚ the phase velocity of the wave is changed but its frequency remains constant. This is most commonly observed when a wave passes from one medium to another at any angle other than 90° or 0°. Refraction of light is the most commonly observed phenomenon‚ When light travels from air into water‚ it slows down‚ causing it to change direction slightly. This change of direction is called refraction. When light enters a
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bluff body skin friction drag is more than pressure drag. True/ false. Justify your answer. 2. Two identical airfoils are kept in identical flow conditions. The surface of one Airfoil is relatively more rough. This airfoil will have higher stalling angle than the other. True/ False. 3. 4. 5. Justify your answer. Maximum Marks : 100 Explain why induced drag of a finite wing is more than that of an infinite wing. What is the effect of Reynolds number on skin friction drag? Plot the variation of Thrust
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Therefore I made on a screen on the wall by using black paper and sticking it to the wall using tape and tack. I also had to make sure that the base of the tub of water was level. If it wasn’t level‚ this could have changed the angle of refraction thereby affecting the results. Therefore‚ using a spirit level‚ I ensure that the surface was level. In case it was‚ I would add small pieces of cardboard in order to ensure it was level. I stuck the mirror to the surface using tack otherwise
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The aim of this experiment is to understand the non-linear aerodynamic characteristic of a slender wing-body (rocket shaped) by installing the slender wing-body inside the wing tunnel and run the wing tunnel at subsonic speed and changing the incidence angle of the slender from -14 to 28 degrees over period of time and record the lift and induced drag readings from a computer which is connected to the wind tunnel. Then the readings obtained from the computer attached to the wind tunnel will be converted
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