Would you expect the work performed by each simple machine to be exactly the same as the work performed without it? Why or why not?

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?

Aspring is originally 0.4m. when a 23n force is applied it stretches to a total of 0.7m. how far is the spring been extended? what is the spring constant of the spring?

Which elements are not noble gases? check all that apply a.) neon b.) helium c.) lithium d.) calcium