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An echo is easily the retransmission of speaker's own voice caused by reflection at a distance surface.
If there is a sound reflector at a distance d from host, then the time interval among original source and it's echo at the site of source will be
Demonstrating the effects of the angle of the sun's rays on the quantity of heat and light received by the earth Bend a piece of cardboard and make a square tube 4 cm2 in cros
Sample of ethane gas (molar mass & 30.1 g/mol) occupies 1.2 x 10 -2 m3 at 46°C and 2.4 x 105 Pa. How many moles of ethane are present in the sample? What is the mass of the
write bernoulli,s equation using pressure,energy,and heads.
The pump shown in the figure adds 20 kW of power to the flowing water. The only significant loss is that which occurs across the filter at the inlet of the pump. Determine the head
What are lens aberrations? Give reasons for them. Illustrate the working of a simple microscope and give a mathematical expression for its magnifying power.
A mild steel closed magnetic circuit has a mean length of 75mm and a cross-sectional area of 320.2mm 2 . A current of 0.40 a flows in a coil wound uniformly around the circuit
The current–voltage characteristic curve for a semiconductor diode as a function of temperature T is given by the equation i = i0(eev/kt - 1) Here the ?rst symbol e represen
which circular path in any time in any mation
How is a wave front dissimilar from a ray ? Draw the geometrical, shape of the wave fronts when (i) light diverges from a point source, and (ii) light emerges out of a convex le
A measuring jar or graduate Select several straight-sided glasses jars of assorted sizes. Olive bottles are very useful for the making of graduated cylinders. Paste a strip of
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