Is Energy added or released when boiling water is changed to steam? When liquid water turns to steam the molecules move (faster or slower) and heat is (added or removed) from the water. The molecules in the steam have (more or less) Kinetic Energy. When liquid water turns to steam the molecules move (faster or […]
What is the highest possible frequency of sound?
What is the highest possible frequency of sound? That’s about the same as the lowest pedal on a pipe organ. On the other side of the human hearing range, the highest possible frequency heard without discomfort is 20,000Hz. While 20 to 20,000Hz forms the absolute borders of the human hearing range, our hearing is most […]
Can trauma change your DNA?
Can trauma change your DNA? The findings, the authors concluded, supported an “epigenetic explanation.” The idea is that trauma can leave a chemical mark on a person’s genes, which then is passed down to subsequent generations. Instead it alters the mechanism by which the gene is converted into functioning proteins, or expressed. What RNA does […]
What is the best time to shift gear?
Is shale cemented?
Is shale cemented? The most common sedimentary rock is shale. It is made of compressed mud–that is, a mixture of clay and silt (fine particles of mineral matter). The sand or gravel particles in sandstone and conglomerate are held together by a mineral cement. How does clay turn into shale? This weathering breaks the rocks […]
Is there air on the moon?
Is there air on the moon? On the moon, there’s no air to breathe, no breezes to make the flags planted there by the Apollo astronauts flutter. However, there is a very, very thin layer of gases on the lunar surface that can almost be called an atmosphere. Technically, it’s considered an exosphere. How does […]
What is the downside of nuclear fusion?
What is the downside of nuclear fusion? But fusion reactors have other serious problems that also afflict today’s fission reactors, including neutron radiation damage and radioactive waste, potential tritium release, the burden on coolant resources, outsize operating costs, and increased risks of nuclear weapons proliferation. What are pros and cons of fusion? List of Pros […]
What type of image is formed by a concave mirror?
What type of image is formed by a concave mirror? Concave mirrors form both real and virtual images. When the concave mirror is placed very close to the object, a virtual and magnified image is obtained and if we increase the distance between the object and the mirror, the size of the image reduces and […]
Why is glass not considered a true solid?
Who is a nominal person?
Who is a nominal person? 1. adjective [usually ADJECTIVE noun] You use nominal to indicate that someone or something is supposed to have a particular identity or status, but in reality does not have it. As he was still not allowed to run a company, his partner became its nominal head. What is a nominal […]