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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
Consider a horizontal cylinder with L/D = large. Imagine this cylinder is filled with a liquid to different levels (consider cases where it is 10, 20, 50, 70, 90% full, note that l
Textile industry: High speed drives are essential with wide range of control, small & medium motors are employed. Commutator motors and synchronous motors are used.
Manganin is an alloy of (A) Copper, manganese and nickel. (B) Copper and manganese. (C) Manganese and nickel. (D) Manganese, aluminium and nickel. Ans:
Chemical changes during: Discharging: The current will flow from positive to negative plate in the external circuit. As current now enters by negative plate, the negative
list the factors used to classify inductors.
State the importance of emission and absorption spectra. Derive the mathematical expression for refractive index of material of the prism.
Explain Conservation of Angular Momentum When a body rotates (spins like a top) or revolves (moves in a circle around a central point), all of the rules that we have used to ca
Rules to verify how many significant numbers has in a calculated quantity: 1. All nonzero digits are significant. As like 457 cm has three significant values; 0.25 g has two si
The force acting on a unit positive charge at agiven point in an electric in an electric field of a point charge of asystem at charges is called the electric field or intensity of
A capacitor and a coil are linked in series. The capacitor is charged and allowed to discharge by the coil. The current that will then flow by the capacitor-coil combination
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