What are the causes of strain? What causes a strain? A strain is caused by twisting or pulling a muscle or tendon. Strains can be acute or chronic. An acute strain is caused by trauma or an injury such as a blow to the body; it can also be caused by improperly lifting heavy objects […]
Which best describes reflection and refraction in both reflection and refraction?
Which best describes reflection and refraction in both reflection and refraction? In both reflection and refraction, rays bounce off a boundary. In reflection, rays bounce off a boundary, and in refraction, rays pass through a boundary. In refraction, rays bounce off a boundary, and in reflection, rays pass through a boundary. Why is refraction called […]
What is error sentence?
What is error sentence? Students commonly make three kinds of sentence structure errors: fragments, run-ons, and comma splices. 1) Fragments: Fragments are incomplete sentences. Very often, they consist of a subject without the predicate. Example: The child who has a rash. What is a syntax error in a sentence? Syntax errors are mistakes in the […]
What is the difference between linear thermal expansion and volume thermal expansion?
What is the difference between linear thermal expansion and volume thermal expansion? B20. What is the difference between linear thermal expansion and volume expansion? Linear thermal expansion defines the fractional increase in length, whereas the volumetric expansion defines the fractional increase in volume per unit rise in temperature. Does concrete expand with heat? Changes in […]
What is the role of prototype?
What is the role of prototype? A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and software programming. A prototype is generally used to evaluate a new design to enhance precision […]
Which best describes the shape of a convection current?
Which best describes the shape of a convection current? The shape of a convection current would be circular. Convection currents are caused by the very hot material at the deepest part of the mantle rising, then cooling, sinking again and then heating, rising and repeating the cycle over and over. How are convection currents used […]
Does boiling point change with temperature?
Does boiling point change with temperature? The boiling point of a liquid depends on temperature, atmospheric pressure, and the vapor pressure of the liquid. When the atmospheric pressure is equal to the vapor pressure of the liquid, boiling will begin. Why does the temperature of ethanol not rise when boiled? As a liquid is heated, […]
What are the 5 main electron group geometries?
What are the 5 main electron group geometries? Electron group geometries refer to the five geometries: linear, trigonal planar, tetrahedral, trigonal bipyramidal, or octahedral. If one or more of the bonding pairs of electrons is replaced with a lone pair, the electron geometry does not change but the the shape of the molecule is altered. […]
What are the 5 major peninsulas in Europe?
What are the 5 major peninsulas in Europe? 4) Europe has five major peninsulas: Scandinavian. Jutland. Iberian. Italian. Balkan. What does Balkan ancestry mean? What does 23andme mean by “Balkan” ancestry? The Balkans have two major distinct ethnic groups: Slavs and the old inhabitants (Greeks, Albanians, etc). The paper by Barbujani and Sokal shows a […]
Which is the best example of kinetic energy?
Which is the best example of kinetic energy? Kinetic Energy: Energy In Motion Any object in motion is using kinetic energy. For example, when you throw a baseball – when the baseball is “moving” that’s the kinetic energy. Moving water and wind are also examples of kinetic energy. What is the definition of kinetic energy […]