One end of a string 3.3 m long is moved up and down with simple harmonic motion at a frequency of 48 Hz . The waves reach the other end of the string in 0.5 s. Find the wavelength of the waves on the string.

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.