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                                                                                               Extra Credit (a).       A force of 264.6 N is required to compress a spring by 2.86 cm. (i).          Calculate the spring constant.                                                                                                            (1.5 points) (ii).         How much work is done in compressing the spring by 2.86 cm?                                                 (1.5 points) (b).         Two masses 12 kg and 38 kg are 32 cm apart. What force does the 38 kg mass exert on the 12 kg mass?                                                                                                                                                                                                                                                                (1.5 points)

Baldwin writes of his father, “Well, he is dead, he never sa…

Baldwin writes of his father, “Well, he is dead, he never saw you, and he had a terrible life; he was defeated long before he died because, at the heart, he really believed what white people said about him.” Which quotation from Du Bois best applies to this quotation?