Category: Physics

What is high angle grain boundaries? Generally, it is assumed that low-angle grain boundaries (LAGBs) are those with a misorientation less than about 15 degrees. In contrast, the misorientation of high-angle grain boundaries (HAGBs) is greater than about 15 degrees. What are the characteristics of grain boundary? A grain boundary is the interface between two […]

Why is there no change in temperature during a phase change? The term change of phase means the same thing as the term change of state. i.e. during phase change, the energy supplied is used only to separate the molecules ; no part of it is used to increase the kinetic energy of the molecules. […]

Is ice made of H2O? Ice is H2O. c. Water vapor is H2O Adam Sennet has no problem with this. Water is a liquid. Can you have water vapor at 0 C? Yes, water can stay liquid below zero degrees Celsius. There are a few ways in which this can happen. The freezing point of […]

What is the largest group of rock-forming minerals? Silicates What are the two main group of minerals? All minerals, however, can be classified into two main groups—silicate minerals and nonsilicate minerals—based on the chemical compositions of the minerals. What are the 7 mineral groups? Silicates, oxides, sulfates, sulfides, carbonates, native elements, and halides are all […]

Is it worth it to buy a telescope? Most telescopes that cost less than $300 aren’t really worth it. We suggest getting good binoculars instead. Stay away from any telescope advertised for its magnifying power. For a child, look for a tabletop telescope that’s portable, easy to push around the sky, and virtually indestructible. What […]

What are the only two rivers in the world that flow north? Johns River and the Nile River are the only two rivers in the world that flow north.” In this editorial he explains that there are hundreds of rivers that flow north and; in fact, the St. Johns River flows south as well. What […]

What is the purpose of uncertainty? Uncertainty as used here means the range of possible values within which the true value of the measurement lies. This definition changes the usage of some other commonly used terms. For example, the term accuracy is often used to mean the difference between a measured result and the actual […]

What are the basic engine components? An engine is composed of several major components; the block, the crank, the rods, the pistons, the head (or heads), the valves, the cams, the intake and exhaust systems and the ignition system. What components are included in a basic engine block? Engine block components Cylinder blocks. Cylinder liners. […]

Why is it important to learn the human body? We all only get one body, and it is important that we keep it healthy if we are going to have long and happy lives. Part of taking care of our health is understanding the different parts and systems of the body. You can make your […]

Which side of the tape measure is CM? Above you’ll see a picture of a metric/imperial pocket tape measure. The measurements towards the bottom of the image are metric. In other words they’re in centimetres and milimetres. There are 10mm in each centimetre (shown by the ten spaces between each cm) and 100cm in each […]