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Demonstrating how the angle of the sun's rays changes from day to day at the same hour
Cut a 1-cm round hole in a piece of paper or cardboard. Place this in a south window of your classroom where the sun's rays will shine by the hole and strike a piece of white paper on the floor, the table or window sill. Draw the outline of the spot where the beam of light strikes the paper. Write the date and hour inside the outline. Repeat this on succeeding days at exactly the similar hour
why wouldn''''t you be electrocuted if you walked under an electric transmission line during a rainstorm?
2. The dipole in problem is removed and the space between plates is filled with Cu of conductivity σ (look up the value). (a) Derive an expression for the current density betwee
It is the distance travelled by the disturbance in single time period. It only relays on the properties of the medium and it independent of time and position.
Static Capacitors: The power factor can be improved by between capacitors in parallel with the equipment operating at lagging power factor. The capacitor draws a leading current a
Bell's inequality (J.S. Bell; 1964) A quantum mechanical theorem shows that if quantum mechanics were to rely on hidden variables, it ought to have nonlocal properties.
A ball is 6.5 m from a convex mirror with a magnification of 0.75. If the image is 0.25 m in diameter. What is the diameter of the actual ball?
what is anti reflection coating ?
Why different colours of white light travell with different speed in a glass prism,while they travell with same speed in air? Ans)Since in diffeernt medium frequecy remains const
what is friction? What are the factors affecting for it? Advantages and disadvantages of it
Study of a rolling ball A large ball bearing or 'bagatelle ball' rolling down a smooth track can be timed by a pendulum. To make the track, fasten together two 120 cm lengths o
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