What is the standard radius of the earth?
The mean radius, often used as a standard measure, is approximately 6,371 kilometers (3,959 miles). This value represents the average distance from the Earth's center to any point on its surface.How do you find the radius of a planet in physics?
By observing the time between transits, we know the orbital period. Kepler's Third law can be used to determine the orbital radius of the planet if the mass of the orbiting star is known (R3=T2−Mstar/Msun, the radius is in AU and the period is in earth years).What is the radius of Earth in physics?
The Earth's equatorial radius a, or semi-major axis, is the distance from its center to the equator and equals 6,378.1370 km (3,963.1906 mi). The equatorial radius is often used to compare Earth with other planets.How did scientists calculate the radius of Earth?
Eratosthenes was able to measure the radius of the earth using the difference in measure- ments of shadow length at two locations directly north-south of each other on the same day. To use this method, you first must accept that the earth is round.What is the radius of Earth at pole and equator?
What is the radius of the earth according to NASA?
Size and DistanceWith a radius of 3,959 miles (6,371 kilometers), Earth is the biggest of the terrestrial planets and the fifth largest planet overall.
What is the formula of radius of Earth orbit?
The radius of the earth's orbit around the sun (assumed to be circular) is 1.50×108 1.50 × 10 8 km, and the earth travels around this orbit in 365 days.What is Earth's radius exactly?
Its equatorial radius is 6378 km, but its polar radius is 6357 km - in other words, the Earth is slightly flattened. Eratosthenes was measuring the polar radius, and his value (using the 0.15 km/stadium conversion) lies between the polar and equatorial values.Is the earth radius 6378 or 6371?
Because it is not perfectly round, Earth's radius varies. At the Equator, Earth's radius (called the equatorial radius) measures about 6,378 km (3,963 miles). At the North and South Poles, the planet's radius (called the polar radius) is slightly shorter: around 6,357 km (3,950 miles).What is the radius of the earth in physics HSC?
Radius of Earth = 6.371×106 6.371 × 10 6 m.What is the R in physics radius?
In the centripetal force equation F = mv2/r, the r represents the radius of the circular motion. These facts are also easy for students to read and recall. It's not as easy for students to put into practice. They see the letter r, hear "radius," and plug in any random distance they can pluck out of the problem stem.What is the actual radius of the earth in CM?
The equitorial radius of the Earth is 6,378 kilometers (km):Therefore, 6,378 km = 637,800,000 cm. or 6.378 * 108 cm.