The 9.6 n weight is in equilibrium under the influence of the three forces acting on it. the f force acts from above on the left at an angle of α with the horizontal. the 6.9 n force acts from above on the right at an angle of 52◦ with the horizontal. the force 9.6 n acts straight down. what is the magnitude of the force f?

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.

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form