A specially constructed sandwich of silicon and other materials that converts light energy to electric is

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

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Which sections of the heating curve illustrate this process?