on April 24, 2022
What keeps a satellite up in its orbit around the Earth?
Space and AstronomyA satellite maintains its orbit by balancing two factors: its velocity (the speed it takes to travel in a straight line) and the gravitational pull that Earth has on it. What are the force that keep a satellite in its orbit? That is to say, a satellite is an object upon which the only force
on April 24, 2022
What is a ray line line segment and angle?
Space and AstronomyA line is a straight path that continues forever in both directions. A ray is part of a line. A ray has one endpoint and continues forever in one direction. A line segment is part of a line. It is the part of a line between two endpoints. What is ray and line? A line
on April 24, 2022
What is the difference between an open path and a closed path read more >>?
Space and AstronomyAn open path has endpoints. It starts in one place and ends in another place — clearly a line segment, and not a polygon. A closed path has no starting point and no endpoint. What is an open path in InDesign? In page layout programs, such as Adobe InDesign, and graphics programs, such as Adobe
on April 24, 2022
How do you find the Directrix of an ellipse?
Space and AstronomyFor the ellipse x2a2+y2b2=1 x 2 a 2 + y 2 b 2 = 1 , the equations of the two directrix of ellipse is x = +a/e, and x = -a/e. The directrix of the ellipse is equidistant from the center of the ellipse. The two directrices of the ellipse are parallel to each
on April 24, 2022
Can a central angle be obtuse?
Space and AstronomyWhat is a obtuse central angle? An obtuse angle is a type of angle that is always larger than 90° but less than 180°. In other words, it lies between 90° and 180°. Can a central angle be greater than 180? There are two types of central angles. A convex central angle, which is a
on April 24, 2022
Which if any pair of sides is parallel?
Space and AstronomyShapes are parallel if they have lines that are always the same distance from each other and will never intersect or touch. Some shapes that have parallel sides include the parallelogram, the rectangle, the square, the trapezoid, the hexagon, and the octagon. A trapezoid has one pair of parallel sides. Which shape has two pairs
on April 24, 2022
What did Euclid contribute?
Space and AstronomyIn the Elements, Euclid deduced the theorems of what is now called Euclidean geometry from a small set of axioms. Euclid also wrote works on perspective, conic sections, spherical geometry, number theory, and mathematical rigour. What contributions did Euclid make? Euclid’s vital contribution was to gather, compile, organize, and rework the mathematical concepts of his
on April 24, 2022
How do you find the running feet of a circle?
Space and AstronomySo if the diameter of your circle is 10 feet, you’d calculate: 10 × 3.14 = 31.4 feet 10 × 3.14 = 31.4 \text{ feet} 10×3. 14=31. … 10 × 3.1416 = 31.416 feet 10 × 3.1416 = 31.416 \text{ feet} 10×3. … 6 × 3.14 = 18.84 feet 6 × 3.14 = 18.84 \text{
on April 24, 2022
What 4 groups of stars can be located on the HR diagram?
Space and AstronomyThe group called the main sequence extends in a rough diagonal from the upper left of the diagram (hot, bright stars) to the lower right (dim and cool). Large, bright, though cool, stars called giants and supergiants appear in the upper right, and the white dwarfs, dim, small, and hot, lie in the lower left.
on April 24, 2022
What is the largest galaxy universe solar system?
Space and AstronomyFrom largest to smallest they are: Universe, galaxy, solar system, star, planet, moon and asteroid. What is the biggest solar system universe or galaxy? The Universe is the biggest and contains billions of galaxies. A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by