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What is the hardness of water? How is it expressed?
Hardness is the property of water which stops lather formation with soap. This is because of the presence of certain salts of calcium, magnesium and other heavy metals dissolved in water, mainly because of the dissolved impurities like bicarbonates, chlorides and sulphates of calcium and magnesium.
Gravitational field can also be shown by lines of force. This is same in several ways as that of electric lines of forces. With one dissimilarity, electric charges are negative and
a) Explain what is meant by the term "Heat Energy" b) An Aluminium bar 0.5m long, initially at 20° C is heated until its temperature rises by 50 0 C. Determine the change in l
Can the whole charge of a body is transfer to another body
Illustrate the source of stellar energy. Describe the carbon-nitrogen cycle and proton - proton cycle occurring in stars. Write down a note on ‘Breeder reactor'.
Coordinate System for Circular Motion In physics and circular motion is a movement of an object that was along the circumference of a circle or rotation along a circular path.
A sled and its rider are perched at the top o a hill that is 35 m tall. If the gravitational potential energy is 3.0 x 10 4 J. What is the weight of the sled and rider?
What are wave fronts? (Physics) A wave front is an imaginary surface joining all points in space that are reached at the similar instant by a wave propagating by a medium. L
Discuss the diffraction of light through n slits using plane transmission grating.
What do you mean by dispersion of light? What is deviation given by a thin prism of angle 80 and refractive index is 1.5? For what angle of incidence, Snell's law is not working
Question: Regard as a high school built to handle 1500 students but attended by 2500 students. Between classes the halls are crowded with students moving to their next class. A
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