What factor affects the polarization of light by scattering?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Which quantities are scalars? choose all that apply a. distance b. speed c. acceleration d. velocity

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