Alarge container, 120 cm deep is filled with water. if a small hole is punched in its side 77.0 cm from the top, at what initial speed will the water flow from the hole? use a equation and explain every step

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.