Below is the least squares regression output for tree #2. Simple linear regression results: Dependent Variable: Ψ leaf water potential Independent Variable: sap flow velocity Ψ leaf water potential = -0.345 - 0.0552 sap flow velocity Sample size: 6 For a tree with sap flow velocity equal to 15.16, the leaf water potential is -1.18. Find the residual.

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.