Category: Physics

What is the input of a machine? Simple Machines | Short/Long Answer Questions Work input is work done on a machine to get the desired output. Work output is the amount of desired work that is done by a machine. For an ideal machine, the work output is equal to the work input i.e the […]

What are the three main parts of a chemical reaction? A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow. What are the two types of chemical reactions? Types of Chemical Reactions: Single- and Double-Displacement Reactions Recognize chemical reactions as single-replacement reactions and double-replacement […]

How do I filter rows instead of columns in Excel? So you can follow the steps. Select the area where you want to sort values. Click the button “Sort & Filter” in the ribbon. In the menu, click the option “Custom Sort”. In this window, click the “Options”. Now you will see another new window. […]

What happens to light rays as it passes through a convex lens? Convex Lens. Rays of light that pass through the lens are brought closer together (they converge). A convex lens is a converging lens. When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal […]

How do key beds help date rock layers? Like index fossils, key beds are used to match rock layers. A key bed is a thin layer of rock. The rock must be unique and widespread. For example, a key bed from around the time that the dinosaurs went extinct is very important. What is biostratigraphy […]

How much food is being wasted per year or every 10 years? An estimated 1.3 billion tonnes of food is wasted globally each year, one third of all food produced for human consumption. In ten years, the United States will waste the equivalent of 66 tons of food per second across the globe. What country […]

At what temperature does all motion cease theoretically? A temperature scale whose zero point is absolute zero, the temperature of 0 entropy at which all molecular motion stops, -273.15° C. The size of a degree Kelvin is the same as the size of a degree Celsius. Which temperature does all molecular motion steps? Step by […]

What exactly is science according to philosophers? Category. The philosophy of science is concerned with all the assumptions, foundations, methods, implications of science, and with the use and merit of science. This discipline sometimes overlaps metaphysics, ontology and epistemology, viz., when it explores whether scientific results comprise a study of truth. How is Aristotle relevant […]

What does the G in reaction I represent? The (aq) sign stands for aqueous in water and means the compound is dissolved in water. Finally, the (g) sign means that the compound is a gas. Coefficients are used in all chemical equations to show the relative amounts of each substance present. What does the subscript […]

What do you mean by central orbit? A central orbit is an orbit in which the attractive force between a central mass and test mass is a central force, i.e., is directed towards the central mass. A general central force law is therefore given by. (1) for any function f(r), where is the force per […]