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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.
Three small snails are each at a vertex of an equilateral triangle of side 60 cm. The ?rst sets out towards the second, the second towards the third and the third towards the ?rst,
The following data are measures of triceps skinfold thickness (X1), thigh circumference (X2), and midarm circumference (X3). These three variables are used to predict percentage o
calculate the distance a car travelled if its displacement was 50km and the distance it moved north was 40km.assuming it moved westward?
: Construct a regular proof to derive the conclusion of the following argument: 1. (A & U) ~R 2. ~(~R v ~A) / ~U
assignment on micro waves
advantage
a small object is 10cm in front of a plane mirror if you stand behind the object 30cm from it and look at its image for what distance must you focus your eyes
Part A) Infra-Red (IR) Detectors: An IR detector has an impedance of Z= (400+j200) ? . . During design tests the detector current is measured as 4 µA. What is
determine the neutral point in a system of two unlike charges seperated by a distance
Do objects of different weights fall with same acceleration on the earth? Yes , objects fall with the similar acceleration regardless of their weights at the surface of earth,
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