What is the purpose of the ceti program?
a. to listen for disturbances in the earth's crust
b. to listen for unlawful broadcasts from rogue nations
c. to listen for signals from outer space
d. to listen for sounds emitted from the ocean

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

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.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?