What is the value of mass and radius of the Earth?
Value of gravity
| Planet/Sattelite | Radius(m) | Mass(Kg) |
|---|---|---|
| Earth | 6.4 × 106 | 6 × 1024 |
| Mercury | 2.43 × 106 | 3.2 × 1023 |
| Venus | 6.073 × 106 | 4.88 × 1024 |
| Mars | 3.38 × 106 | 6.42 × 1023 |
What is mass and radius?
Mass and radius are two fundamental properties for characterising exoplanets, but only for a relatively small fraction of exoplanets are they both available. Mass is often derived from radial velocity measurements, while the radius is almost always measured using the transit method.
How do you find the radius of the Earth?
Compute the radius of the earth using the formula C (circumference) = 2 x pi x r (radius). Erastosthenes’ formula would look like this: 39,350 = 2 x 3.14 x r, or 6,267 kilometers.
How do you find mass with radius and gravity?
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. G (without the subscripts) is the gravitational constant, and c is the speed of light.
What is the calculation of radius?
radius is always half the length of its diameter. For example, if the diameter is 4 cm, the radius equals 4 cm ÷ 2 = 2 cm.
What is earth’s radius in physics?
For the Earth, the authalic radius is 6,371.0072 km (3,958.7603 mi).
Who calculate the radius of Earth?
Eratosthenes
During the 3 century, B.C. Eratosthenes was able to mathematically calculate the diameter of the earth by comparing the difference in the angle of the sun’s rays at different geographic points. He was the first person that was able to calculate the radius of the earth.
What is the mass of the Earth in km3?
Mass (10 24 kg) 5.9724 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) 5514 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) 0.
What is the diameter and radius of the Earth?
Radius, diameter and circumference. However, Earth is not quite a sphere. The planet’s rotation causes it to bulge at the equator. Earth’s polar radius is 3,950 miles (6,356 km) — a difference of 13 miles (22 km). Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km).
What is the mass of the Earth equal to?
Mass of the Earth. We set this equal to the fundamental equation, force (F) equals mass (m) multiplied by acceleration (a). We know that the acceleration due to gravity is equal to 9.8 m/s 2 , the Gravitational constant (G) is 6.673 × 10 −11 Nm 2 /kg 2 , the radius of the Earth is 6.37 × 10 6 m, and mass cancels out.
What are the dimensions of the earth’s surface?
Radius: 3,959 miles (6,371 km) Diameter: 7,918 miles (12,742 km) Surface Area: 1.97 x10 8 square miles (5.1 x 10 8 km 2) Mass: 5.972 x 10 24 kg