How a ring main is wired? The mains supply The power sockets in a house are connected by means of a ring circuit. In a ring circuit the live, neutral and earth wires form a loop of cable going from the consumer unit to all of the sockets in turn and then back to the […]
How do igneous rocks look like?
How do igneous rocks look like? Extrusive, or volcanic, igneous rocks look dull and do not sparkle much because they are fine grained. These crystals make a coarse-grained igneous rock called plutonic, or intrusive, igneous rock because the magma was intruded into cracks deep under the earth’s surface. What type of rock is granite? Granite […]
Why metal is a conductor?
Why metal is a conductor? Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions. Are metals shiny? […]
Where do you stop hitting the cue ball?
How is DNA used to identify individuals?
How is DNA used to identify individuals? DNA fingerprinting is a chemical test that shows the genetic makeup of a person or other living things. It’s used as evidence in courts, to identify bodies, track down blood relatives, and to look for cures for disease. What are the steps of gel electrophoresis? There are several […]
What are the three main principles of usability testing?
What are the three main principles of usability testing? Main principles of usability testing are: defining the goal, hypothesis, research questions and creating scenarios accordingly. preparing requisites based on scenarios (prototypes – never waste time creating omnicapable prototype, these can be only worth it as design presentations for clients, but not for UTs. How do […]
Why is Con Ed so expensive?
Why is Con Ed so expensive? It’s an increase in the supply charge that’s catching people off-guard. An increase in the “supply charge” has driven up electricity costs for many Con Ed customers. How do I start a Con Ed service? You’ll need to start service. We’ll ask the current account holder or landlord to […]
Is angular momentum conserved rolling without slipping?
Is angular momentum conserved rolling without slipping? In rolling motion without slipping, a static friction force is present between the rolling object and the surface. A rigid rotating body has angular momentum directed along the axis of rotation. 11.4: Conservation of Angular Momentum. In the absence of external torques, a system’s total angular momentum is […]
What is Peritectoid?
What is Peritectoid? In binary systems, the peritectoid is the transformation of two solid phases in an alloy system, forming a new phase. These reactions happen in a similar way to peritectic transformations (see Peritectic), however, they only occur in the solid state. Is Cementite FCC or BCC? The alpha phase is called ferrite. Ferrite […]
Does Michigan have its own power grid?
Does Michigan have its own power grid? Unlike Texas, Michigan does not operate on its own, independent power grid. Michigan is on the Eastern. How many dams in Michigan still produce energy? Michigan has more than 50 conventional hydroelectric dams that typically supply less than 1.5% of the state’s net generation. However, Michigan’s largest hydroelectric […]