Category: Physics

What are four items in the forensic code of ethics? While it noted the lack of a single code of ethics that covered all forensic disciplines, the working group identified four major categories addressed by every code of ethics it reviewed: 1) working within professional competence, 2) providing clear and objective testimony, 3) avoiding conflicts […]

Is Hannibal a cannibal? Hannibal Lecter M.D. (born January 20, 1933) is a Lithuanian-American serial killer, notorious for consuming his victims, earning him the nickname “Hannibal the Cannibal”. Orphaned at a young age, Lecter moved to the United States of America, becoming a successful psychiatrist. Is Hannibal Lecter a real person? Alfredo Ballí Treviño: The […]

Can a sense of rhythm be learned? You can improve your sense of rhythm by paying attention to certain things in music. Most popular forms of music rely on only a few time signatures, so if you know what they are and how to count them, you will have covered a lot of ground already […]

What is the largest savanna in the world? Africa Who lives in the African savanna? Farm animals are generally cattle (zebus), sheep, goats and donkeys. Many peoples live in the savannahs: the Nubians in the upper Sudanese Nubia, the Kualngo and the Akan in the Ivory Coast, the Bushmen and the Hottentots in Namibia. The […]

What are the impacts of recreational fishing on marine ecosystems? Recreational fishing has its biggest impact on marine debris, overfishing, and fish mortality. Release mortality in recreational fisheries is the same as the impacts of bycatch in commercial fisheries. What are the impacts of commercial fishing? DEGRADED ECOSYSTEMS When too many fish are taken out […]

What is the valence of K+? eight Why does K have no valence electrons? Elemental potassium has an [Ar] 4s1 electron configuration. One would say it has one valence electron. If we take that one valence electron away, it makes sense to say that it now has zero valence electrons because “1 – 1 = […]

Where is the most heat loss in a house? The biggest area for heat loss in most homes are drafts within in the walls, windows and doors. It’s typical for these spots to be less noticeable than you’d think they would be. Just a single 1/8 inch gap under a standard 36-inch wide door will […]

Is fabric a good insulator? Fabrics like wool and fleece are great insulators and will keep your body warm over an extended period of time. On the reverse side, fabrics like lace and cotton don’t hold heat well, and won’t keep your body warm very long. What fabric holds heat the best? Wool Is polyester […]

How did Robert Wilson discover microwaves? The Large Horn Antenna and the Discovery of Cosmic Microwave Background Radiation. Bell Labs radio astronomers Arno Penzias and Robert Wilson were using a large horn antenna in 1964 and 1965 to map signals from the Milky Way, when they serendipitously discovered the CMB. What were Penzias and Wilson […]

What is the velocity of a sound wave traveling through air at a temperature of 18 degrees C? 343m/s. Why is the speed of sound through medium C 0 M s? This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel […]