In a harmonic oscillator with an angular frequency of 5 rad / s, the mass is pulled 2 m from the equilibrium position. Mass t = 0 if at the time x = 1 m; a) Find the phase difference
b) Determine the position equation of the solution of harmonic motion as a function of time.

The density of a substance is 4.0 g/cm3. if a sample of the substance has a volume of 25 cm3 then what is the mass

What color would an object that reflects green and blue light appear to be in white light? a. blue b. cyan c. magenta d. black

Laboratory experiments, observational field studies, and model-building are all examples of different forms of scientific investigations.  in what way do laboratory experiments primarily differ from other forms of scientific investigations?   a.  a laboratory experiment is the only accepted form of investigation within the scientific community.  b.  studies about how things behave in nature or studies involving very large objects are best answered through laboratory experiments.  c.  laboratory experiments involve the identification and control of variables.  d.  data can only be generated through laboratory experiments, not other forms of investigation.