What does 60 feet 6 inches mean in baseball? 60 feet 6 inches is a hallowed baseball number. It might be time for a change. Francis Richter, the editor of the weekly newspaper “Sporting Life,” helped promote the idea of moving the pitcher five feet further from the batter. Before the 1893 season, the National […]
Why is francium so reactive?
Why is francium so reactive? Explanation: Francium is an alkali metal in group 1/IA. All alkali metals have one valence electron. This makes it easier to remove the electron and makes the atom more reactive. Why is F2 so reactive? Why is fluorine gas (F2) reactive if it is already a molecule? This is because […]
What are the 3 sources of sound?
What are the 3 sources of sound? Sound sources can be divided into two types, natural and man-made. Examples of natural sources are: animals, wind, flowing streams, avalanches, and volcanoes. Examples of man-made sources are: airplanes, helicopters, road vehicles, trains, explosions, factories, and home appliances such as vacuum cleaners and fans. What are the 4 […]
Is dull a metal or nonmetal?
Is dull a metal or nonmetal? Properties Metals Non-metals Appearance Shiny Dull State at room temperature Solid (except mercury, which is a liquid) About half are solids, about half are gases, and one (bromine) is a liquid Density High (they feel heavy for their size) Low (they feel light for their size) Strength Strong Weak […]
Why do people get more injuries when he falls on cemented floor than on sand?
What was the powerful Indian tribe that Lewis and Clark were warned about?
What was the powerful Indian tribe that Lewis and Clark were warned about? A French trader named Jean Baptiste Truteau warned them that “all voyageurs who undertake to gain access to the nations of the Upper Missouri ought to avoid meeting this tribe as much for safety of their goods as for their lives….” Nevertheless, […]
Which protein is used for muscle contraction?
Which protein is used for muscle contraction? Tropomyosins How does the structure of protein affect muscle contraction? Protein structure affects muscle contraction and enzyme activity. It affects muscle contraction by the ATP/ADP changes in the myosin structure and troponin/tropomyosin interaction blocks binding of myosin to actin. What are the two most important proteins involved in […]
What type of ion is K?
What type of ion is K? It is an alkali metal cation, an elemental potassium, a monovalent inorganic cation and a monoatomic monocation. Potassium is the major cation (positive ion) inside animal cells, while sodium is the major cation outside animal cells….4.3Related Element. Element Name Potassium Element Symbol K Atomic Number 19 Why is Cu+ […]
How did movable type impact China?
How did movable type impact China? Bi Sheng’s movable type changed how ancient China printed its documents, making printing more efficient and easier. Instead of carving an entire book into one huge block, characters are carved into small clay blocks. Why is printing important to modern society? The printing press allows us to share large […]
What is the difference between isotopic mass and atomic mass?
What is the difference between isotopic mass and atomic mass? While atomic mass is an absolute mass, relative isotopic mass is a dimensionless number with no units. This loss of units results from the use of a scaling ratio with respect to a carbon-12 standard, and the word “relative” in the term “relative isotopic mass” […]