"Consider a 2-kg ball on the end of a 1-m long cord whose mass is negligible. The ball is swung in a horizontal circle and makes 1 revolution per second. What is the centripetal acceleration of the ball?"

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

Describe the path of the electric current through a circuit?

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.