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Places where friction occurs
Locate the places on several mechanical devices where parts rub together. Roller skates, pulleys and the wheels of toys often required oil. Try to find two similar bearings that required oil, such as those on a roller skate. Oil one and compare the ease with which it turns with the bearing that has not been oiled.
What is the size of an atom?What is the size of an atom?What is the size of an atom?What is the size of an atom?What is the size of an atom?What is the size of an atom?
Explain the term 'dielectric constant' of a medium in terms of capacitance of a capacitor. Draw a graph showing variation of resistivity of carbon with temperature
How do you use operational amplifier as differentiator and adder/subtractor. Fig. shows differentiator or differentiation amplifier. As its name implies, circuit performs mathe
The phenomenon of decomposition of electrolyte solution into ions on passing the current by it is called electrolysis. Practical functions of electrolysis are Electrotyping, ext
Zeroth law of thermodynamics If two bodies are each in thermal equilibrium along a third body, then all of the three bodies are in thermal equilibrium along with each other.
Feeling centrifugal force Tie a weight to a string about a metre in length and then whirl the weight around at arm's length. View the outward pull on the string. This is centri
When a moving body changes with time,then we say that the body has acceleration.simentaniously the change in velocity is equal then it is called uniform acceleration .
Pressurized Water Nuclear Reactor There are two categories of nuclear reactors. The Pressurized Water Reactor (PWR) and the Boiling water reactor (BWR). Pressurized Water React
Ray Diagrams for Concave Mirrors Object Located At the Center of Curvature: Ray diagrams are meaningful tools for denoting the location of an image as generates through a con
Two light rays will interfere constructively with maximum amplitude if the path difference between them is: a) one wavelength b) one-half wavelength c) one-qua
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