If someone takes a shot of apple cider vinegar one time and claims that this shot of apple cider vinegar prevented them from getting sick, this is an example of what kind of approach?

Study 1: A survey on eating habits among college students without collecting any personal identifiers.

Three point charges are fixed in the x-y plane, as shown in the figure. The charges are QA = +[q] × 10-4 C, QB = +[q] × 10-4 C, and QC = –[q] × 10-4 C. The (x, y) coordinates of each charge are indicated in the figure, with coordinates given in meters. What is the electric potential energy of the system (in J)?

If case I’ve missed an exam, which of the following is NOT true?

Two points, a and b, are located in the x-y plane, with coordinates given in meters (m), as shown in the figure. A uniform electric field of magnitude 5000 V/m is directed along the +x axis. A charged particle with charge Q = +[q] × 10-4 C is moved from point a to point b by an external force. The particle starts and ends at rest. How much work does the external force do on the particle (in J)? Note: The result may be positive or negative. [Hint: external work = change in electric potential energy]

Pearson homework assignments are due before 11:59 PM on Sunday during the week that we finish with the chapter.  

Which of the following factors ranks as the #1 contributor to outbreaks of bacterial food borne illness?   

Pathogens require food, moisture, temperature between 41°F and 135°F and oxygen to grow and contaminate food.               

Which of these appeals relates to this statement: Buy a Chevy vehicle! It is known for its dependability, and it has been around for over a hundred years!*You will not lose points if you get this question wrong.

The fossilized remains of two different species are found and scientists are interested in determining the evolutionary relationship of the two species. Which of the following would NOT be useful in determining the relatedness?