Cross country skier moves 32 m west word than 54 m east word and finally 68 m westward what is the distance moved?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90