As light travels from a vacuum (n = 1) to a medium such as glass (n > 1), does its wavelength change?
Does its speed change? Does its frequency change?

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 of the following are guidelines to follow for obtaining accurate observations

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology