Which mirror is used in headlight of a car? Concave mirror is used in headlights of vehicles, because when the bulb of headlight is placed at focus of concave mirror, it allows the light to spread out to infinity (longer distances). A concave mirror is a converging mirror as opposed to a convex mirror which […]
How do you find the instantaneous rate of change of a derivative?
What are the 4 components of language?
What are the 4 components of language? These include morphology, syntax, semantics, pragmatics and phonology. Morphology is the study of word structure. It describes how words are formed out of more basic elements of language called morphemes. A morpheme is the smallest meaningful unit of a language. What are the 5 levels of language? Phonetics, […]
Why is it called Cartesian coordinate system?
Why is it called Cartesian coordinate system? The Cartesian coordinate system is used to plot points. The Cartesian plane is named after the French mathematician and philosopher René Descartes (1596–1650), who introduced the coordinate system to show how algebra could be used to solve geometric problems. How are Cartesian planes used in real life? The […]
What are the 5 rules of a topographic map?
What are the 5 rules of a topographic map? Topographic Map Rules Contour Lines Never Cross. Lines indicating elevation should never intersect on a topographic map, because each line represents a different elevation, so it is impossible to have two elevations at the same location. Measuring Steepness. Stream Flow Direction. Contours Close. Concentric Circles. Elevation […]
What are the disadvantages of modern periodic table?
What are the disadvantages of modern periodic table? What are the disadvantages of modern periodic table? Position of hydrogen is not satisfactory, it can be placed either in group I or 17 group of the first period. It fails to accommodate lathanides and actinides in the main body of the periodic table. These are kept […]
What is symbiosis and its type?
What is symbiosis and its type? Symbiosis, any of several living arrangements between members of two different species, including mutualism, commensalism, and parasitism. Both positive (beneficial) and negative (unfavourable to harmful) associations are therefore included, and the members are called symbionts. symbiosis. What is the definition of symbiosis for kids? Symbiosis is a close relationship […]
At what height do humans reach terminal velocity?
At what height do humans reach terminal velocity? A typical skydiver in a spread-eagle position will reach terminal velocity after about 12 seconds, during which time they will have fallen around 450 m (1,500 ft). At what height is a fall dangerous? Falls from more than 20 feet usually result in a trip to the […]
What is the relationship between heat and the density of air?
What is the relationship between heat and the density of air? As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot […]
Are coherent sources of light?
Are coherent sources of light? Coherent source of light are those sources which emit a light wave having the same frequency, wavelength and in the same phase or they have a constant phase difference. Can 2 sources be coherent? In physics, two wave sources are perfectly coherent if their frequency and waveform are identical and […]