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Sliding versus Static Friction:
Friction force is the force exert by a surface as an object moves crosswise it or makes an effort to move across it. Two types of friction forces - static friction and sliding friction
Sliding friction results when an object slides across a surface. For instance consider pushing a box across a floor. The floor surface offers resistance to the group of the box. We often say that the floor exerts a friction force upon the box.
Static Friction results when the surfaces of 2 objects are at rest relative to one another and a force exists on 1 of the objects to set it into motion relative to the other object. Assume you were to push with 5-Newton of force on a large box to move it across the floor
Consider an x-ray tube in which electrons are accelerated by a constant high voltage of 250 kV. If the electron beam current is 10 mA, calculate the x-ray energy flux (energy fluen
Examples of like and unlike parallel forces?
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An experiment with two spikes Use the drill for a rotation machine as in the above experiment. Unite two spikes by attaching the point end of every to the end of a 15 cm length
In an experiment of Quink tube source freequence 100 Hz is used to find 2nd maxima to 4th manima movalbe part of tube displaced by 1cm then calculate speed of sound in air
Q. Collector current I c =20 mA and base current I b = 50 A. Find current gain β of a transistor. β = I C / I B = 20 X 10 -3 / 50 X 10 -6 = 400
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According to Rutherford's experiment when a sample of radioactive substance is place in a lead box and permit the emission of radiation by a small hole only. When the radiation ent
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Q. The radioactive isotope 84Pa214 undergoes a successive disintegration of two α decays and two β decays. Find the atomic number and the mass number of the resulting isotope.
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