Anyone good at physics that can help me plss

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Am i correct on these two physics questions?