WebJan 28, 2024 · The radius of our planet, The Earth, is the distance from the centre of the Earth to a point on or near its surface, and it ranges from nearly 6,378 km to nearly 6,357 … WebThe Earth has a radius of 2.439 kilometers / 1.516 miles and a diameter of only 12.742 km / 7.917 mi. When it comes to weight, the mass of Earth is equivalent to 5.9 quadrillion kg. In the Solar System, our Earth is the fifth largest planet and the largest of the terrestrial planets.
Planet Earth facts and information - National Geographic
WebJan 21, 2024 · Resources. Earth travels around the sun in an orbit that is slightly oval-shaped, known as an ellipse. Therefore, the planet's distance from the sun changes throughout the year. However, the ... Earth radius (denoted as R🜨 or $${\displaystyle R_{E}}$$) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid, the radius ranges from a maximum of nearly 6,378 km (3,963 mi) (equatorial radius, denoted a) to a minimum of nearly 6,357 km … See more Earth's rotation, internal density variations, and external tidal forces cause its shape to deviate systematically from a perfect sphere. Local topography increases the variance, resulting in a surface of profound complexity. Our … See more The following radii are derived from the World Geodetic System 1984 (WGS-84) reference ellipsoid. It is an idealized surface, and the Earth measurements used to calculate it … See more The Earth can be modeled as a sphere in many ways. This section describes the common ways. The various radii derived here use the … See more Earth's diameter is simply twice Earth's radius; for example, equatorial diameter (2a) and polar diameter (2b). For the WGS84 ellipsoid, that's respectively: • 2a … See more Geocentric radius The geocentric radius is the distance from the Earth's center to a point on the spheroid surface at See more The mathematical expressions above apply over the surface of the ellipsoid. The cases below considers Earth's topography, above or below a See more The first published reference to the Earth's size appeared around 350 BC, when Aristotle reported in his book On the Heavens that mathematicians had guessed the … See more jira python get sprints by name
What is the radius of earth? - Answers
WebJan 31, 2024 · Earth's radius plus the height of your eyes above sea level, r + h; Earth's radius r; and; The line tangent to the surface of Earth starting in your eyes. That's the distance of the horizon. We calculate the distance of the horizon with the formula a = √[(r + h)² - r²]. WebJan 28, 2024 · We set this equal to the fundamental equation, force (F) equals mass (m) multiplied by acceleration (a), and since the acceleration due to gravity is 9.8 m/s2, the gravitational constant (G) is 6.673 × 10−11 Nm2/kg2, the radius of the Earth is 6.37 × 106 m, and mass cancels out, we arrive at 5.96 × 1024 kg as the answer for the mass of the ... WebOct 22, 2024 · The diameter of a circle is twice the radius, giving us a diameter for Earth of 12,756 km. Note: The Earth is almost, but not quite, a perfect sphere. Its equatorial radius … jira query list of users