On a cello, the string with the largest linear density (1.56 *10-2 kg/m) is the c string. this string produces afundamental frequency of 65.4 hz and has a length of .08 m betweenthe two fixed ends.
what is the speed of the wave on the string?
what is the wavelength of the wave on the string?
what is the tension in the string?

Idon’t quite understand this problem

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2