A spiral spring, loaded with a piece of metal, extends by 10.5 cm in air, when
the metal is fully submerged in water,
the spring extends by 6.8 cm. calculate
the relative density of the metal
(Assuming Hooke's law is obeyed)

Amass attached to a spring is displaced from its equilibrium position by 5cm and released. the system then oscillates in simple harmonic motion with a period of 1s. if that same mass–spring system is displaced from equilibrium by 10cm instead, what will its period be in this case? a mass attached to a spring is displaced from its equilibrium position by and released. the system then oscillates in simple harmonic motion with a period of . if that same mass–spring system is displaced from equilibrium by instead, what will its period be in this case? a) 0.5sb) 2sc) 1sd) 1.4s

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

The strong nuclear force acts over a small distance than the electrostatic force. true or false