Is the idea that people should be more interested in advancing their lives on earth than in worrying about getting to heaven

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.

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value