There is a new brand of water on the market advertised to relieve headaches. It is selling like crazy! When the Food and Drug Administration asked for scientific proof that the water actually does what it claims to do, the owners of the company produced a scientific research study that they had paid a group of scientists to perform. In the study researchers gave this special water to a group of 50 people who claimed to have a headache. The people drank the special water whenever they felt thirsty over a period of 24 hours. After the 24 hours, 99% of the people reported that their headache was gone. Should the Food and Drug Administration trust this scientific study and allow the company to sell the water with this claim? Would this be an example of science or pseudoscience? Support your answer with at least three reasons.

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

9.98 kg of r-134a at 300 kpa fills a rigid container whose volume is 14 l. determine the temperature and total enthalpy in the container. the container is now heated until the pressure is 600 kpa. determine the temperature and total enthalpy when the heating is completed. use data from the steam tables.

To understand the behavior of the electric field at the surface of a conductor, and its relationship to surface charge on the conductor. a conductor is placed in an external electrostatic field. the external field is uniform before the conductor is placed within it. the conductor is completely isolated from any source of current or charge. part a: which of the following describes the electric field inside this conductor? it is in the same direction as the original external field.it is in the opposite direction from that of the original external field.it has a direction determined entirely by the charge on its surface.it is always zero. part b: the charge density inside the conductor is: 0non-zero; but uniformnon-zero; non-uniforminfinite part c: assume that at some point just outside the surface of the conductor, the electric field has magnitude e and is directed toward the surface of the conductor. what is the charge density η on the surface of the conductor at that point? express your answer in terms of e and ϵ0