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Reducing friction with ball bearings
Find two tin cans that have a deep groove approximately the top, such as paint cans. Lay marbles in single groove and invert the other can over the marbles to form a ball bearing. Place a book on top and note how simply the demonstration bearing turns. Oil the marbles and it will turn still more easily.
The relative permeability of a paramagnetic substance is (A) Unity. (B) Slightly more than unity. (C) Zero. (D) less than unity. Ans: The relativ
Determine the enthalpy of vaporizaton of species: You wish to determine the enthalpy of vaporizaton of species A. You are able to find the following data: Species A has a norm
Question: A long straight portion of wire carries an increasing current due northward. Due east of as well as very near the straight wire at the same height as that of the stra
(1) CAPACITANCE: The value of capacitance depends upon the area of conducting plates, thickness of dielectric material and its permittivity. The frequency of operation
What is the essential effect of a magnetic field? Answer: A magnetic field is an imperceptible entity that exists in a region of space that may be void of all matter in th
The current transformer has a single turn on the primary winding and a secondary winding of 60 turns. The secondary winding is connected to an ammeter with a resistance of 0.15
Explain the term 'resolving power' of an astronomical telescope. How does it get affected on 1. Enhancing the aperture of the objective lens? 2. Enhancing the wavelength of t
I have tried to do an experiment where i tried to check the direction of the net force by water on a body. I have some question regarding some concepts. I took an empty sealed bott
A block of mass 2 kg is pulled up on a smooth incline making angle 30 degrees with horizontal . if block moves with an acceleration of 1 m/s2 , find a) Power delivered by the pull
Start by opening the "Maze Game" activity. When you open it you will be presented with the "Arena of Pain". Set it to "practice" and play with the controls. You will find that by c
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