A45.0 g hard-boiled egg moves on the end of a spring with force constant 25.0 n/m. its initial displacement 0.500 m. a damping force fx= −bvx acts on the egg, and the amplitude of the motion decreases to 0.100 m in a time of 5.00 s. calculate the magnitude of the damping constant b. express the magnitude of the damping coefficient numerically in kilograms per second, to three significant figures.