If a mass of 0.55 kg attached to a vertical spring stretches the spring 2.0 cm from its original equilibrium position, as shown in the diagram, what is the spring constant?

How many molecules are present in 3 mols of silicon dioxide (sio2)?

An object has a weight of 500 on earth what is the mass of this object

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by