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How to make a simple pulley
A reasonably satisfactory pulley can be complete from a wire clothes hanger and a cotton reel. Cut off both wires of the hanger at a distance of about 20 cm from the hook. Bend the ends at right angles and fall both by a spool. Adjust the wires so that the spool turns simply and then bend the ends down to keep the wires from spreading.
Action and reaction with a roller skate Place a roller skate on a smooth floor. Step on the roller skate with one foot and take a step forward with the other. Observe that the
Factors which are affect velocity of sound in gaseous medium is (1) Effect of density (2) Effect of pressure (3) Effect of temperature : (4) Effect of humidity
why does rain water boils faster than fresh water
A certain radioactive substance has a half-life of 40 minutes. How much of an original 100 grams substance will remain after 2 hours? solution) m= m0/2t/T m=100 gms.. t=2 hours
How is transmitter used in fibre optic communication system? Transmitter: This consists of analog to digital interface (driver). There, the input signal is converted within
What is calculated constraint relation?
Draw a graph showing the variation of potential energy of a p of nucleons as a function of their separation. Show the regions in which nuclear force is (i) attractive, and (ii) rep
A girl starts and finishes the ride at rest. Her horizontal motion can be take as. •an initial uniform acceleration for 3.0s, followed by •a constant speed of 2.4m/s for a further
What is Potential Gradient Magnitude of electric field at a point on an equipotential surface equal's rate of alter of potential, ΔV, with distance Δx, as point moves perpendic
Like the centre of mass, the moment of inertia is a function of a body that is concurrent to its mass distribution. Moment of inertia gives a measurement of the resistance of a bod
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