Two identical He-filled spherical bal. loons each carrying a charge q are tied to a welght W with strings and float in equilibrium as shown in Fig. 1.12(a). Find: 1. the magnitude of q, assuming that the charge on each balloon acts as if it were concentrated at the centre. 2. the volume of each balloon. 9, m 818 127 9. m mg B T cose Tsine 1 m
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