A race car travels around a track. It took him 5 seconds to complete 1 lap and come back to the starting line. What was his average 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

Which two particles are found in the center of an atom

Which of the following are guidelines to follow for obtaining accurate observations