A block is attached to a spring. The spring constant is 20N/m. If the spring is compressed by 10cm, what is the maximum vertical height that the block can reach when it is released? The total mass of the block and spring is 80g. (g = 9.8N/kg)

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Which of the following is the result of the nuclear weak force? the instability of large nuclei the repelling force between positively charged protons the structure of the atom certain types of nuclear decay

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.