A spring stretches 0.120m when a mass of 0.300kg is placed on it. The spring is placed horizontally with the 0.3kg mass at rest on a frictionless table. The mass is pulled so that the spring is stretched 0.100m from its equilibrium point and released from rest. Please help determine the following: a. What is the spring constant? b. Determine the magnitude of the amplitude of the horizontal oscillation. c. Determine the maximum velocity d. The velocity while the mass is 0.04m from equilibrium.