A student is doing an experiment in science class. the instructions are to make a heterogeneous mixture and then separate all the components of the mixture back out again. She decides to use sand, gravel, salt, and water. Describe methods that she could use to separate the sand, the gravel, the salt, and the water apart from each other without losing any of those components

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