14. An acre is a common unit used to measure the area of a portion of land. An acre is equal to about 4046.9 m2. What is this area in square
kilometers (km2)?

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

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Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value