Category: Physics

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 […]

What is the mass of one mole of magnesium? The relative masses of each element can be found on the periodic table. For example, one atom of magnesium weighs 24.31 amu (atomic mass units). However, one mole of magnesium weighs 24.31 g. What does atomic number tell? The atomic number or proton number (symbol Z) […]

How do I mail Frozen Food ups? How to Ship Food so It Stays Fresh Wrap Baked Goods to Create an Airtight Seal. Select Appropriate Insulation for Food that Must Remain Cold or Frozen. Package Items That Can Melt, Thaw or Contain Liquid in Watertight Plastic. Choose the Best Refrigerant for Cold or Frozen Items. […]

Is a recorder an open or closed pipe? Flutes and recorders work like this, the “embouchure” or “window” acting as an open end. On the other hand, in a pipe closed at one end, like a pan flute or a stopped organ pipe, there is always an antinode at the open end and a node […]

What is normal accommodation of eye? The young human eye can change focus from distance (infinity) to as near as 6.5 cm from the eye. This dramatic change in focal power of the eye of approximately 15 dioptres (the reciprocal of focal length in metres) occurs as a consequence of a reduction in zonular tension […]

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? 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? Glass is not a slow-moving liquid. It is a solid, albeit an odd one. It is called an amorphous solid because it lacks the ordered molecular structure of true solids, and yet its irregular structure is too rigid for it to qualify as a liquid. What is […]

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? 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 […]