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What is piezoelectricity?
Piezoelectricity: Piezoelectricity gives us a means of changing electrical energy to suppose new geometric positions and the mechanical dimensions of the substance are changed. This phenomenon is known as electrostriction. The reverse effect i.e. production of polarization by the application of mechanical stresses can take place only if the lattice has no center of symmetry, this phenomenon is called as piezoelectricity. Example - Rochelle salt, Quartz, Barium titante.
Give the properties and applications of Bakelite. This is most common type of phenol formaldehyde. This is hard, thermosetting, dark coloured material. Its major properties
how tofind renold constant..
Calculate ?G of Eqs?IX-1 and IX-2 for the case of n-octane and plot against r over the range r=5 to 3ooA and for the two cases of x=2 and x=250.Assume 20? IX-1:?G=-n?µ+4pr2? IX-2:?
A contact sulphuric acid plant burns pure sulphur with air. The products of combustion pass to a converter where some of the SO 2 is converted to SO 3 at a fast rate owing to the
The degree of freedom when ice water and water vapour coexist in equilibrium is zero
Applications of permanent magnets a - Applications based on attraction or repulsion forces b - Applications based on Faraday's induction law c- Application based on Lor
1 ΔS on rapid decompression Steam at 400C, 100 bar in an insulated cylinder is suddenly decompressed to 10 bar, by unlocking the piston and allowing the gas to expand, with a c
Zinc has hcp structure. In a unit cell of zinc, the zinc atoms occupy 74% of volume of unit cell.
The similar system is now heated in two stages, by rst contacting with a reservoir at T2 halfway among T1 and Tf , then by contacting with the reservoir at Tf . Again and the ent
what are the conversion rates of the different components in hemicellulose to simpler sugars(e.g xylan to xylose)
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