What is a concave structure?
Space and AstronomyA concave is a surface or a line that is curved inward. In geometry, it is a polygon with at least one interior angle greater than 180°. What is an example of concave structure? The front side of a spoon is curved inwards. Such a surface is called concave. The inside part of a bowl
How do astronomers use light to study the universe?
Space and Astronomy“You take the light from a star, planet or galaxy and pass it through a spectroscope, which is a bit like a prism letting you split the light into its component colours. “It lets you see the chemicals being absorbed or emitted by the light source. From this you can work out all sorts of
What is the last quarter of the moon?
Space and AstronomyThe Third or Last Quarter Moon is also called a Half Moon because the Sun’s rays illuminate exactly 50% of the Moon’s surface. Half of the Moon’s surface is always illuminated by direct sunlight, except during lunar eclipses when Earth casts its shadow on the Moon. What phase of the moon is last quarter? A
How do you find the inner product?
Space and AstronomyHow do you find the inner product of a vector? To take an inner product of vectors, take complex conjugates of the components of the first vector; multiply corresponding components of the two vectors together; sum these products. What is inner product example? An inner product space is a vector space endowed with an inner
What is an edge in a tree?
Space and AstronomyAn edge is another fundamental part of a tree. An edge connects two nodes to show that there is a relationship between them. Every node (except the root) is connected by exactly one incoming edge from another node. Each node may have several outgoing edges. How many edges a tree have? A labeled tree with
What are rational expressions used for?
Space and AstronomyRational equations can be used to solve a variety of problems that involve rates, times and work. Using rational expressions and equations can help us answer questions about how to combine workers or machines to complete a job on schedule. How rational expressions are used in real-life? Rational equations can be useful for representing real-life
How do you calculate magnifying power?
Space and AstronomyTotal magnifying power, or total magnification, can be calculated by taking the magnification of the eyepiece lens being used, which is usually 10 times, and multiplying this value by the magnification of the objective lens, which will differ depending on which of the objective lenses you choose to use. How do you calculate the magnifying
Why do astronauts use lithium hydroxide when they go into space?
Space and AstronomyLithium hydroxide is an attractive choice for space flight because of its high absorption capacity for carbon dioxide and the small amount of heat produced by the reaction. What is lithium hydroxide used for in space? Answer. Lithium hydroxide is used in the Space Shuttle and in submarines to remove carbon dioxide gas out of
What is the definition of base area?
Space and AstronomyIt refers to the area of one of the bases of a solid figure. It can be used to determine the volume of solid figures. What is a definition for a base? base, in chemistry, any substance that in water solution is slippery to the touch, tastes bitter, changes the colour of indicators (e.g., turns
How do you find the parts of a circle?
Space and AstronomyThe 4 main parts of a circle are radius, diameter, center, and circumference. The center of the circle is the point that is equidistant from all the sides of the circle. The radius is the length of the line from the center of the circle to any point on the curve of the circle. What