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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.
Laboratory steelyard To make a steelyard weighing to 500 g use a wooden lath only one metre long balanced on a strong sewing needle stuck by it 3mm from its upper edge and 12 c
what is the importance of laser?
Can an ordinary diode be used as a zener diode? Justify your answer. Ans Ordinary diode can't be used as a Zener diode, since ordinary diodes aren't operated in the rever
Q. Give the differences between hard X-rays and soft X-rays.
what are they and how do you measure them
Question: If you chafe a rubber rod with rabbit fur thus giving the rod a negative charge and bring the rod near a few bits of neutral paper the rod will attract the bits of pa
which circular path in any time in any mation
Where is the electric potential because of a single negatively charged particle a maximum? Answer: One could acquire at this one by looking at the formula for the electri
ACCELERATION: The time rate of change of velocity of a body is known as acceleration.
Write an assembly program to make a microwave. Need: 1. The microwave has a clock (hh:mm:ss am/pm) and the user should be able to alter the clock at any time. 2. For c
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