Waste water story- (1)
observe your locality carefully and make a survey
on open drain or man holes. are they a source of
bad odor? make a report on treatment of open
drains with disinfectants like bleaching powder and
mosquito sprays and their effect on the
environment.
plz somebody me
its urgent

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.