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A spring is hung from the ceiling. When a coffee mug is attached to its end, it stretches 3.0cm before reaching its new equilibrium length. The block is then pulled down slightly and released. What is the frequency of oscillation? thank you :)

In an E.coli mapping experiment a cross is made between an Hfr strain that is g+ m+ p+ in genotype and an F- strain that is g- m- p-in genotype. Each of these three genes is required to make a particular nutrient needed by bacteria to grow; the - beside the gene indicates that the gene makes a...