Which option is the best to choose

Aspring with a mass of 2 kg has a damping constant 14 kg/s. a force of 3.6 n is required to keep the spring stretched 0.3 m beyond its natural length. the spring is stretched 0.6 m beyond its natural length and then released. find the position of the mass at any time t. (assume that movement to the right is the positive x-direction and the spring is attached to a wall at the left end.)

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

What is created when solids, liquids, an gases mix with one another