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Reducing friction with pencils
Place round pencils under a heavy box. Join a string to the box and find the force required to move it across a table. Search the force needed to move the box without the rollers. Summarize the data get and suggest explanations for the results.
friction with pencils
why is nichrome wire used in electric heaters? properties of nichrome wire.
the magnitude and direction of acceleration of body both are constant will the body moves in straight line
What are semiconductors? Give an example for n-type semiconductors. Semiconductors are materials having electrical conductivity among that of insulators and conductors. This i
Define free vector
It is found that when a liquid is free from the external forces, it always gets the shape of a spherical drop. It is due to, for a needed mass, a sphere has the least field area. I
Principle of Cell: To study electrical principles further we require a source of emf. Although an emf can be produced by any of the six methods discussed above, large amounts o
what are the properties of quantisation of charge??
Older people wear eye glasses with bifocal corrective lenses . What is the eye defect that necessitate this eye glasses ?
the use and working principle of thermoelectric thermometer
The Josephson effect is a term given to the phenomenon of current flow across two superconductors separated by a very, thin insulating barrier. This arrangement, two superconductor
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