What is the color of a star
(a) with B magnitude of 8.122 and a V magnitude of 8.284?
(b) wi...
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15. give an example for some particles or waves that are moving faster than light in everyday life 16. what is a laser? 17. what is an oscilloscope? 18. what does it means practically that nothing is faster than light in vacuum? 19. what is vacuum?
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Which describes increasing the efficiency of energy resource
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An object is placed in front of a concave mirror between the pole and the focus of the mirror, what is the nature of the image formed by the mirror
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