How did Sputnik 1 change the world?
Space and AstronomySputnik made it possible to test satellite pressurisation, to study radio wave transmission and the density of the atmosphere, and allowed scientists to learn how to track objects in orbit. Sputnik 1 orbited Earth every 96 minutes, and the fact that it passed over the USA seven times a day worried many Americans. Why was
What is horizontal distance in surveying?
Space and AstronomyIn plane surveying, the distance between two points means the horizontal distance. If the points are at different elevations, then the distance is the horizontal length between plumb lines at the points. What is horizontal distance? Horizontal distance means the distance between two points measured at a zero percent slope. What is horizontal and slope
How many meteors enter the Earth’s atmosphere?
Space and AstronomyAn estimated 25 million meteoroids, micrometeoroids and other space debris enter Earth’s atmosphere each day, which results in an estimated 15,000 tonnes of that material entering the atmosphere each year. How many meteors enter the atmosphere daily? 25 million meteors If larger it survives to impact on the ground, although it will be reduced in
What is a term number in math?
Space and AstronomyA term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient. What is
What is the name of the movie about Stephen Hawking’s life?
Space and AstronomyThe Theory of Everything The Theory of Everything Based on Travelling to Infinity: My Life with Stephen by Jane Hawking Produced by Tim Bevan Eric Fellner Lisa Bruce Anthony McCarten Starring Eddie Redmayne Felicity Jones Charlie Cox Emily Watson Simon McBurney David Thewlis Maxine Peake Which movie is based on the life of Stephen Hawking?
What did George Boole invent?
Space and AstronomyGeorge Boole, (born November 2, 1815, Lincoln, Lincolnshire, England—died December 8, 1864, Ballintemple, County Cork, Ireland), English mathematician who helped establish modern symbolic logic and whose algebra of logic, now called Boolean algebra, is basic to the design of digital computer circuits. Who was George Boole and what did he invent? What did George Boole
Is Kepler still in orbit?
Space and AstronomyOn October 30, 2018, after the spacecraft ran out of fuel, NASA announced that the telescope would be retired. The telescope was shut down the same day, bringing an end to its nine-year service. Kepler observed 530,506 stars and discovered 2,662 exoplanets over its lifetime. Is Kepler still active? The agency announced on Oct. 30,
What is roster method and rule method?
Space and AstronomyThe two main methods for describing a set are roster and rule (or set-builder).</p>\n<p>A <i>roster</i> is a list of the elements in a set. When the set doesn’t include many elements, then this description works fine. If the set contains a lot of elements, you can use an ellipsis ( . . . ) What
What did alhazen discover about space?
Space and AstronomyWhat did Al-Haytham discover? Ibn al-Haytham made a thorough examination of the passage of light through various media and discovered the laws of refraction. He also carried out the first experiments on the dispersion of light into its constituent colors. What is Alhazen best known for? Alhazen was an Arabian physicist, mathematician, and astronomer whose
What is commutative law example?
Space and AstronomyThe commutative law of addition states that if two numbers are added, then the result is equal to the addition of their interchanged position. Examples: 1+2 = 2+1 = 3. 4+5 = 5+4 = 9. What is a commutative law? commutative law, in mathematics, either of two laws relating to number operations of addition and