Aspring has a force constant k, and an object of mass m is suspended from it. the spring is cut in half and the same object is suspended from one of the halves. how are the frequency of oscillation, before and after the spring is cut, related?

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

The two required components for a generator

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