What are the 3 magnetic materials? Materials that can be magnetized, which are also the ones that are strongly attracted to a magnet, are called ferromagnetic (or ferrimagnetic). These include the elements iron, nickel and cobalt and their alloys, some alloys of rare-earth metals, and some naturally occurring minerals such as lodestone. Does the human […]
Do pilots pee while flying?
Do pilots pee while flying? Piddle Packs are small bags male fighter pilots use to pee while in flight. They are specially shaped bags with absorbent beads in them. If we have to relieve ourselves, we’ll unzip the flight suit—which is designed to unzip from the top as well as the bottom—unroll the piddle pack, […]
What are the applications of DNA sequencing?
What are the applications of DNA sequencing? Homologous DNA sequences from different organisms can be compared for evolutionary analysis between species or populations. Notably, DNA sequencing can reveal changes in a gene that may cause a disease. DNA sequencing has been used in medicine including diagnosis and treatment of diseases and epidemiology studies. What are […]
Why do bubbles form in boiling water?
Why do bubbles form in boiling water? Boiling begins near the source of heat. When the pan bottom becomes hot enough, H2O molecules begin to break their bonds to their fellow molecules, turning from sloshy liquid to wispy gas. The result: hot pockets of water vapor, the long-awaited, boiling-up bubbles. Why does lower air pressure […]
What is the electromagnetic spectrum used for?
What is the electromagnetic spectrum used for? Nearly all frequencies and wavelengths of electromagnetic radiation can be used for spectroscopy. Radio waves, infrared rays, visible light, ultraviolet rays, X-rays, and gamma rays are all types of electromagnetic radiation. Which color is the most refracted? violet light What is required for refraction? For refraction to occur […]
What is the best shoe stretcher?
What is the best shoe stretcher? FootFitter Premium Professional Should your toes touch the end of shoes? We should not be making contact with the end of the toe box; in fact many well-fit walking shoes should have a generous space between the end of the toebox and the tip of the toes. We should […]
Why did the Hindenburg not use helium?
Why did the Hindenburg not use helium? U.S. law prevented the Hindenburg from using helium instead of hydrogen, which is flammable. After the crash of the hydrogen-filled R101, in which most of the crew died in the subsequent fire rather than the impact itself, Hindenburg designer Hugo Eckener sought to use helium, a non-flammable lifting […]
How dangerous is spearfishing?
How dangerous is spearfishing? With Spearfishing you may encounter a variety of dangers including Sharks, shallow water blackout, heavy seas, strong currents, Jelly Fish, and risk drowning as a result fo line tangles. Spearfishing by its very nature is an extreme sport and few activities can rival the excitement and thrill of landing a quality […]
What are the 4 types of equilibrium?
What are the 4 types of equilibrium? There are three types of equilibrium: stable, unstable, and neutral. Figures throughout this module illustrate various examples. Figure 1 presents a balanced system, such as the toy doll on the man’s hand, which has its center of gravity (cg) directly over the pivot, so that the torque of […]
Why do you say I love you to the moon and back?
Why do you say I love you to the moon and back? People often use this phrase when speaking to romantic partners as well as close friends and family members. This phrase rests on the distance between the Earth and the Moon, emphasizing that their love is even greater than this outsized distance. Loving someone […]