An object with mass 0.170 kg is acted on by an elastic restoring force with force constant 11.0 N/m. The object is set into oscillation with an initial potential energy of 0.150 J and an initial kinetic energy of 6.80=1072 J. 'U=' Value H Units ' ' Request Answer PartC At what displacement are the kinetic and potential energies equal? Express your answer with the appropriate units. Request Answer PartD What is the value of the phase angle if the initial velocity is positive and the initial displacement is negative? Express your answer in radians. Ll & A O Request Answer Part A An object with mass 0.170 kg is acted on by an elastic restoring force with force constant 11.0 N/m. The object is set into oscillation with an initial potential energy of What is the amplitude of oscillation? 0.150 J and an initial kinetic energy of 6.80x10-2 J. Express your answer with the appropriate units. HA A = Value Units Submit Request Answer Part B What is the potential energy when the displacement is one-half the amplitude? Express your answer with the appropriate units. U = Value Units Submit Request Answer V Part C At what displacement are the kinetic and potential energies equal? Express your answer with the appropriate units