malaika43 malaika43

18-10-2022
Physics

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7. O/N 11/P22/Q4
Fig. 4.1 represents a microwave travelling in air through points A and B.
m
A
Fig. 4.1 (not to scale)
The distance between A and B is 40 cm.
(a) State the speed of microwaves in air.
speed =

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