If it requires 6.0 J of work to stretch a particular spring by 0.02 m from it's equilibrium length, how much more work will be required to stretch it an additional 0.04 m?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Astudent is performing an experiment comparing sound and light waves. the student gathers the following data. what conclusion does the student most likely make based on this data? light waves always travel the same speed; however, the speed of sound is determined by the medium that it travels through. all sound waves always have the same energy, so the temperature of the medium does not affect wave speed. light needs to vibrate particles, so it travels fastest in tightly packed solids, while sound does not need a medium, so it travels fastest in a gas. tightly packed particles in solids slow down the light waves; however, sound waves make particles bounce into each other, so they travel faster in solids.

What is special about a dc circuit ?