100 points for who ever tells me what newtents 3 law is

Which statement correctly describes the relationship between frequency and wavelength?

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

What ia the energy of an object because of its potential and kinetic energies