WebJan 24, 2024 · The mean radius of the Earth is 6,371 km, and 70.8% of its surface is covered by water. What is the surface area of the Earth covered by land? See answers … WebEach sphere has a radius of 5.10 cm. 33. An average-sized asteroid located 5.0 × 10 7 km from Earth with mass 2.0 × 10 13 kg is detected headed directly toward Earth with speed of 2.0 km/s. What will its speed be just before it hits our atmosphere? (You may ignore the size of the asteroid.) 34.
13.4 Satellite Orbits and Energy - OpenStax
WebFeb 7, 2024 · – Radius: 1,079.6 miles (1,737.5 km) – Diameter: 2,159.2 miles (3,475 km). – Surface area: 14.6 million square miles (38 million square km) – Mass: 7.35 x 10^22 kg – Density: 3.34 grams per... 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 have an uncertainty of ±2 m in both the equatorial and polar dimensions. … 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 geodetic latitude φ: where a and b are, respectively, the equatorial radius … See more The mathematical expressions above apply over the surface of the ellipsoid. The cases below considers Earth's topography, above or below a reference ellipsoid. As such, they are topographical geocentric distances, Rt, which depends not only on latitude. 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 campground of the rockies reviews
Earth - Wikipedia
WebMar 30, 2024 · The radii are given as: Radius of the earth, R = 6371.0 km Radius of the earth's moon , r = 1737.5 km Calculate the difference in the radii d = R - r So, we have: d = … WebOn solving the circumference of the earth we get 39,350 kilometres. So the radius of the earth will be. Circumference = 2πr. 39,350 = 2 × 3.14 × r. r = 39350/ 6.28 = 6267 kilometer. WebJun 14, 2008 · As a result, the latest measurements indicate that the Earth has an equatorial diameter of 12,756 km (7926 mi), and a polar diameter of 12713.6 km (7899.86 mi). In short, objects located along the ... campground ohio