12. Which of the following is a true statement regarding electrical drawings? O A. Dimensions and distances matter greatly on blueprints but not on schematics.
O B. Dimension lines are drawn outside an object and have filled-in circles at both ends.
O C. Dimensions and distances matter greatly on schematics but not on blueprints.
O D. Dimension lines are drawn into an object and have filled-in circles at both ends.

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.

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?