What is the radius of Earth for physics?

At what height above the earth surface does the force of gravity decrease by 10% assume the radius of earth is 6370km
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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.
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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).
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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.
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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.
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What is the radius of Earth at pole and equator?

What is the radius of the earth according to NASA?

Size and Distance

With a radius of 3,959 miles (6,371 kilometers), Earth is the biggest of the terrestrial planets and the fifth largest planet overall.
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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.
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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.
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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).
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What is the radius of the earth in physics HSC?

Radius of Earth = 6.371×106 6.371 × 10 6 m.
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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.
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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.
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What is Earth's radius in physics?

The radius of the earth is 6371 km. Q. What is the approximate mass of the atmosphere of the earth? Assume the radius of the earth to be 6370 km.
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What is the perfect radius of Earth?

According to NASA, Earth's radius at the equator is 3,963 miles (6,378 kilometers), while the radius at the poles is 3,950 miles (6,356 km). Therefore, the diameter of Earth through its center is 7,926 miles (12,756 km).
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What is the real name of Earth?

The official name is “Terra”. This is latin and means the same, but 99% of all Science Fiction Writers refer to it, when telling about a vivid universe with different planets and faces.
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What is the curvature of the Earth in miles?

The Earth curves approximately 8 inches (20 centimeters) per mile. This means that if you were to draw a straight line on the surface of the Earth for one mile, the ends of that line would be about 8 inches (20 centimeters) apart vertically. This phenomenon is known as the curvature of the Earth.
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Who determined the radius of the earth accurately?

In the 11th century, Al-Biruni successfully determined the radius of the Earth. He accomplished that by measuring the dip of the horizon from the top of a hill. From the measurements, he was able to calculate the radius of the Earth.
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How did the Greeks calculate the radius of the earth?

In the third century BCE , Eratosthenes, a Greek librarian in Alexandria , Egypt , determined the earth's circumference to be 40,250 to 45,900 kilometers (25,000 to 28,500 miles) by comparing the Sun's relative position at two different locations on the earth's surface.
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What is radius measured in physics?

The radius of a circle is defined as a line segment that joins the center to the boundary of a circle. The length of the radius remains the same from the center to any point on the circumference of the circle. The radius is half the length of the diameter.
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What is the distance radius in physics?

Radius of a circle is the distance from the center of the circle to any point on it's circumference. It is usually denoted by 'R' or 'r'.
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What is the atomic radius in physics?

Atomic radius or Atomic Radii is the total distance from the nucleus of an atom to the outermost orbital of its electron. We define the atomic radius of a chemical element as: The mean or typical distance from the centre of the nucleus to the boundary of the surrounding shells of electrons.
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