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You haven't said 'half' of WHAT .
I'll assume that you mean "half of what it is on the surface", and
I shall now proceed to answer the question that I have invented:
(x/earth radius)2 = 2
x = (earth radius) times sqrt(2) =
- 9,010 km (5,599 miles) from the center
- 2,639 km (1,640 miles) from the surface
What else can I help you with?
What eclipse can be seen by about half of the earth at once?
That is a lunar eclipse which can be seen from everywhere on the dark side of the Earth, which is always a hemisphere with its centre at the place where the Sun is directly downwards.
How high does a rocket have to go above Earth's surface until its weight is half what it would be on Earth?
The mass of an object at any point will remain the same( unless its velocity approaches that of light, of course )So, for the weight to reduce to half its value, the acceleration due to gravity has to reduce to half its value on earth. now, the relation between acceleration due to gravity and distance from the center of the earth is given by g = 1/R2 where R is the radius of the earth which is 6400 kms (approx) let 'h' be the height at which the weight of the rocket will be half its initial value. so, gh / g = R2 / (R+h)2 but gh = g/ 2 substituting it in the above expression yields h=2649.6 kms (approx) so, at this height, the weight of the rocket will be half its initial weight.
If the moon were twice as far from the earth as it is now the gravitational force it exert on the earth would be?
One-sixth the current force. Gravitational force depends on the inverse square of the distance between two objects. Doubling the distance will reduce the force by a factor of 2^2 = 4, making it one-fourth of the original force.
How would the gravitational force that the Moon exerts on the Earth compare with the force it exerts today if the moon were moved so that it is half as far from the earth as it is today?
The gravitational force between two objects decreases with distance. If the Moon were moved to half its current distance from the Earth, the gravitational force it exerts on the Earth would increase by a factor of four (2^2), since force is inversely proportional to the square of the distance.
How long will it take for the earth to reach halfway to sun in its orbit?
It would take the Earth around 93 million miles to reach halfway to the Sun in its orbit. Earth's average distance from the Sun is about 93 million miles, so halfway would be approximately half of that distance.
What height from the centre of earth the value of g is half of its value on the surface of earth?
gravity follows an inverse squared law. at twice the distance it would be a quarter of G. 1/g2 = 1/2. so the distance would be the square root of 2 (or 1.4). 1.4 x earths radius of 6366 km would be 9003 km
Why is the radius of the circle half the diameter?
The radius of a circle is the distance from the centre to the rim. The diameter is the distance fron rim to rim passing through the centre point. It therefore follows that the radius is half the diameter
How does one calculate the space to mounting height ratio for lighting?
Half the distance from the wall to the centre of the luminaire, as the distance there is between luminaires. e.g if the distance between luminaires horizontally is 3m then the distance to the centre of the luminaire from the wall is 1.5m. If the distance between the luminaires vertically is 5m then the distance to the centre of the luminaire from the wall is 2.5m
What is radius equal to?
Radius is half of the diameter - i.e. it is the distance from the centre to the edge of the circle.
What is the value of gravitational field strength on a planet with half Earth's mass and half its radius?
The value of the gravitational field strength on a planet with half the mass and half the radius of Earth would be the same as Earth's gravitational field strength. This is because the gravitational field strength depends only on the mass of the planet and the distance from the center, not on the size or density of the planet.
What is the radius of a circle with a 3cm diameter?
The radius would be HALF the diameter, making the answer 1.5cm ! The diameter of a circle is the distance across it, passing through the centre. The radius is the distance from the centre to the edge.
What is the distance between Melbourne and Geelong?
Geelong is roughly an hour and a half drive from the city centre of Melbourne. The distance is approx 75 Kilometres.
At what altitude above the earth surface the value of 'g' reduces to half of its value at the surface?
The gravitational acceleration, g, decreases with altitude according to the inverse square law. At an altitude equal to the radius of the Earth (about 6371 km), the value of g would reduce to half of its surface value. This is because the gravitational attraction between the Earth and an object weakens as the distance between them increases.
How do you figuer out the radius of a circle?
The radius is the distance from the centre of the circle to the edge, the radius is half of the diameter. I hope this helps
What is the distance of the habitable zone from a red dwarf star?
About 0.5 AU, or about half the distance from Earth to the sun.
How far is it from north to south?
About 12,500 miles which is half the distance around the earth.
What is the furthest distance from north to south?
The furthest distance from north to south (on the earth) would be the distance from the north pole to the south pole, or half of the earth's polar circumference. It's about 12,400 miles, just a little bit less than half-way around the equator.
