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Cutting a glass dish from a used electric bulb
The hemispherical bottom of an electric light bulb gives a useful glass dish; a soldering iron can be used to cut it off. put the bulb on its side and make a scratch with a file somewhere with its line of greatest circumference. Carry the soldering iron at an angle of 450 in a laboratory clamp so that the tip is the similar height above the bench as the point of incision. Hold the bulb in both hands and, keeping it horizontal; bring the scratch into contact with the point of the soldering iron.
What is the shortest possible time in which a bacterium could travel a distance of 8.4 cm across a Petri dish at a constant speed of 3.5 mm/s?
Can you explain coherent sources of light?
#how entropy tells which process is spontaneous and which is non spontaneous.i also wana know that although 2nd law of thermodynamic is for heat engine and heat pump how it is rela
#quest. While music is on you will try to oppose the two ear phone pieces to attract.
successive disintegration derive equation for nb
A circular coil has a 12.8cm radius and consists of 29.0 closely wound turns of wire. An externally produced magnetic field of magnitude 2.23 mT is perpendicular to the coil. (a) i
Why does it take longer to heat a bucket of water than a cup of water? Because there is extra water in a bucket than in a cup, and more energy has to be put into the bucket of
Q. A capacitor of capacitance 2 μF is in an ac circuit of 1000 Hz. Compute the reactance of it. Solution: Capacitive reactance XC = 1 / ω C = 1 / 2π ν C =
What do you mean by Doppler effect? Derive a mathematical expression for the apparent frequency of a note, when source of sound and observer are approaching each other.
Charge and discharge characteristics of nickel cadmium cell: During charging and discharging the electrolyte acts only as an ionised conductor, transporting electrons from one
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