Earths Equatorial Radius to Meter Conversion Table, How to Convert Earths Equatorial Radius to Meter, Convert Earths Equatorial Radius to Other Length Units. [d] It is also common to refer to any mean radius of a spherical model as "the radius of the earth". The various radii derived here use the notation and dimensions noted above for the Earth as derived from the WGS-84 ellipsoid;[6] namely. Since the estimate by Eratosthenes, many models have been created. The one exception: The flattening in the original definition of WGS84 was a calculated value, based on the Earths second dynamic form factor as determined from satellite orbits ($\bar C_{2,0}$ in WGS84, $J_2$ in GRS80). Explanation: The Earth's radius (r) is 6371 km or 3959 miles, based on numbers from Wikipedia, which gives a circumference (c) of c = 2 * * r = 40 030 km We wish to find the height (h) which is the drop in curvature over the distance (d) Using the circumference we find that 1 kilometer has the angle 360 / 40 030 km = 0.009. Today we know our planet's circumference is roughly 40,000 kilometers (24,850 miles). Aristotle (384-322 BC) was among the first to recognize the fact of our planet being a round sphere. What is the Radius and Diameter of a Circle? For best results, the minimum radius of the geofence should be set between 100 - 150 meters. The Sun - HyperPhysics Concepts In a geocentric ellipsoid, the center of the ellipsoid coincides with some computed center of Earth, and best models the earth as a whole. e Around 1690, Isaac Newton and Christiaan Huygens argued that Earth was closer to an oblate spheroid than to a sphere. Record the distance between your location and your partners location. How do you find the radius of a gravitational field? When it is measured around the equator, it is40,075 km (approximately, 24,901 miles), whereas, if it measured from the north pole to the south pole it is40,008 km (approximately, 24,860 miles). For information on the Earth, see the Earth Fact Sheet. Measured around the poles, the circumference is 40,007.863 km (24,859.734 mi). In this state, it would have approximately the same mass as it has now, but its radius would be equal to the radius of the Earth. Compute the circumference of the Earth using the distance and angle measurements you have. Step 2 of 5. b) Calculate the surface free-fall acceleration. How to convert radius in metres to pixels in mapbox leaflet? {\displaystyle R_{2}} This cookie is set by GDPR Cookie Consent plugin. Our descriptions of Earths surface must be simpler than reality in order to be tractable. Therefore, if the earth is taken to be a two dimensional object, its perimeter would be equal to the. [4], The variation in density and crustal thickness causes gravity to vary across the surface and in time, so that the mean sea level differs from the ellipsoid. Online calculator: Earth Radius by Latitude (WGS 84) - PLANETCALC Step 3 of 5. If no sub- or superscripts appear on this page - for example, if the "Mass" is given in units of "(1024 kg)" - you may want to check the notes on the sub- and superscripts. where e2 = a2 b2/a2 and A is the surface area of the spheroid. What are the formula in calculating the earth? In simple words, radius refers to that line, which originates from any point of the circle and touches the centre point the circle. The Earth's Gaussian radius of curvature at latitude is:[12]. With Each pair measured the position from the sun, in the same manner the Greek philosopher Eratosthenes exceeded 2000 years back in Alexandria, Egyptby evaluating the size of an item to the size of its shadow, measured at local noon. By knowing the Equatorial diameter or the polar diameter of the Earth, the circumference can be found. How Big Is Planet Earth? - WorldAtlas New Arrivals Expand Space Stations Crew to 6. Let us calculate area of earth using this formula area=4x22/76370= 5.110 4. 1o = 180 radian. R Although the precise strength of Earth's gravity varies depending on location, the nominal "average" value at the Earth's surface, known as standard gravity is, by definition, 9.80665 m/s 2 (32.1737 ft/s 2 ). This is the outside layer of the earth and is made of solid rock, mostly basalt and granite. example R = earthRadius (lengthUnit) returns the mean radius of the Earth using the length unit specified by lengthUnit. The circumference of the world measured round the Equatoris approximtely 24,887. Radius of Earth - adda247 What is the fluid speed in a fire hose with a 9.00 cm diameter carrying 80.0 l of water per second? An arc of 1 degree on earth's surface is equal to how many - Socratic 2a : the bone on the thumb side of the human forearm also : a corresponding part of vertebrates above fishes. {\displaystyle R_{E}} [e] For the Earth .mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num,.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0 0.1em}.mw-parser-output .sfrac .den{border-top:1px solid}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}1/q 289, which is close to the measured inverse flattening 1/f 298.257. Have your partner do the same in her location. [a] Local topography increases the variance, resulting in a surface of profound complexity. How big is Earth? | Space What is the earths radius in meters? - Atom Particles Copyright 2022 - Science-Atlas.com. 371 106 meters (Earth radius 6. Radio Line of Sight Distance Calculator Electrical, RF and earthRadius The radius of the earth is 6378 km. What is the diameter of the earth E These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. This video explains how humans managed to measure the circumference of the earth long long ago using simple math, reasoning and assumptions. Hence 1km=10001000m=10m 6. A few definitions yield values outside the range between polar radius and equatorial radius because they include local or geoidal topography or because they depend on abstract geometrical considerations. 01 Earths equatorial radius63781. The earth rotates once every 23 hours, 56 minutes and 4.09053 seconds, called the sidereal period, and its circumference is roughly 40,075 kilometers. The value of standard gravity corresponds to the gravity on Earth at a radius of 6,375.4 kilometres (3,961.5 mi). Regarding this, what is the diameter of the Earth in scientific notation? Derived quantities: diameter, circumference, arc-length, area, volume, There is no single center to the geoid; it varies according to local. The Earth can be modeled as a sphere in many ways. How to convert latitude or longitude to meters? - Stack Overflow The structure of the Earths upper mantle can be derived from seismic waves. (clarification needed). How do you find the radius of the earth from the circumference? The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. .[10]. = Like a torus, the curvature at a point will be greatest (tightest) in one direction (northsouth on Earth) and smallest (flattest) perpendicularly (eastwest). Putting in the numbers, you have Dividing both sides by m1 gives you the acceleration due to gravity: Newton's law of gravitation gives you the acceleration due to gravity near the surface of the Earth: 9.8 meters/second 2. The earth is made up of three different layers: the crust, the mantle and the core. Asteroids range in size from Vesta - the largest at about 329 miles (530 kilometers) in diameter - to bodies that are less than 33 feet (10 meters) across. A globally-average value is usually considered to be 6,371 kilometres (3,959mi) with a 0.3% variability (10 km) for the following reasons. Eratosthenes estimated Earth's circumference at about 46,250 kilometers (28,735 miles). Its volume is 803.84 cubic meters. Who first calculated the radius of the earth? Since the locations are points on a circle that goes around the Earth, the distance between them can be expressed as an arc measurement on a 360-degree circle. The WGS84 reference ellipsoid is now just that, a reference ellipsoid (that is, its the ellipsoid used as a reference by GPS and related systems). Where R is the radius of the Earth. Mass (10 24 kg) 5.9722 Volume (10 10 km 3) 108.321 Equatorial radius (km) 6378.137 Polar radius (km) 6356.752 Volumetric mean radius (km) 6371.000 Core radius (km) 3485 Ellipticity (Flattening) 0.003353 Mean density (kg/m 3) 5513 Surface gravity (m/s 2) 9.798 Surface acceleration (m/s 2) 9.780 Escape velocity (km/s) 11.186 GM (x 10 6 km 3 /s 2) He also shares personal stories and insights from his own journey as a scientist and researcher. p The circumference of the world may be the distance measured around it. Therefore, the distance you use in the equation is the distance between the two orbiting bodies. 001 km (3958. Answered: You drive down the road at 35 m/s (79 | bartleby How many miles is a meter in scientific notation? Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. What does EARTH RADIUS mean? The oblateness constant q is given by, where is the angular frequency, G is the gravitational constant, and M is the mass of the planet. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Though he did not have instant communications as we do now, he was able to determine the angle of the suns rays in Alexandria at the same time, which was about 7.2 degrees. [22] For both Aristotle and Eratosthenes, uncertainty in the accuracy of their estimates is due to modern uncertainty over which stadion length they meant. In the third century B.C., Eratosthenes, a Greek mathematician, became the first person to mathematically calculate the diameter of the earth by comparing differences in the angle of the suns rays at two separate geographic points. The Earths equatorial radius to meter (m) conversion table and conversion steps are also listed. How does the mass of earth be calculated? - Ox Science Responsibility disclaimer and privacy policy | About Us | Terms & Conditions | Site Map, Scientific discoveries from around the world. These cookies ensure basic functionalities and security features of the website, anonymously. 752 km (3949. Use a scientific calculator. T he circumference of the Earth (around the equator) is approximately 24,887 miles. K Scholars have interpreted Aristotle's figure to be anywhere from highly accurate[20] to almost double the true value. , N Analytical cookies are used to understand how visitors interact with the website. Point on the ellipsoid surface can be defined by the parametric curve equation. {\displaystyle {\mathcal {R}}_{\mathrm {pE} }^{\mathrm {N} }} r = 39350/ 6.28 = 6267 kilometer. It is a physical constant which represents the most probable distance between the electron and the nucleus in a hydrogen atom in its ground state. Circumference of the Earth - Cuemath The radius of the sun at 696,000 km is 109 times the Earth's radius. Earth radius at sea level is 6378. The radius of the Earth, re, is about 6.38 10 6 meters, and the mass of the Earth is 5.98 10 24 kilograms. When considering the Earth's real surface, on the other hand, it is uncommon to refer to a "radius", since there is generally no practical need. Earths circumference is the distance around Earth. They are vertices of the ellipse and also coincide with minimum and maximum radius of curvature. This cookie is set by GDPR Cookie Consent plugin. w It is with the values I gave you. Hence, we create models to approximate characteristics of Earth's surface, generally relying on the simplest model that suits the need. a) Calculate the average density of the white dwarf. Note that this arc is along a great circle. Mass of planet M = 8 x mass of earth = 8 x 6 x 10 24 kg. g = GM/r2, Where M is the mass of the Earth, r the radius of the Earth (or distance between the center of the Earth and you, standing on its surface), and G is the gravitational constant. Mean radius of planet Earth - MATLAB earthRadius - MathWorks