The molecular weight of bovine serum albumin (BSA) is 66,500 g mol⁻¹ and has a specific volume of 0.717 cm³ g⁻¹. Velocity centrifugation demonstrates that s = 4.31 × 10⁻¹³ s for this protein. Assuming a solution density of 1.00 g cm⁻³ and viscosity of 1.00 cP, determine the friction coefficient and effective radius of BSA.