﻿ A remote sensing satellite of earth revolves in a circular orbit at a height of 0.25 x 106 m above the surface of the earth. if earth 's radius is 6.38 x 106 m and g = 9.8 ms-2 then the orbital speed of the  satellite is  from Physics Gravitation Class 11 Manipur Board

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A remote sensing satellite of earth revolves in a circular orbit at a height of 0.25 x 106 m above the surface of the earth. if earth 's radius is 6.38 x 106 m and g = 9.8 ms-2 then the orbital speed of the  satellite is

• 7.76 kms-1

• 8.56 kms-1

• 9.13 kms-1

• 6.67 kms-1

A.

7.76 kms-1

Given, height of a satellite

h = 0.25 x 106

Earth's radius, Re = 6.38 x 106

For the satellite revolving around the  earth, orbital velocity of the satellite

Given, height of a satellite

h = 0.25 x 106

Earth's radius, Re = 6.38 x 106

For the satellite revolving around the  earth, orbital velocity of the satellite

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The position co-ordinates of two particles of masses m1 and m2are (x1, y1, z1) and (x2, y2, z2) respectively. Find the coordinates of the centre of mass.

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Let the position coordinates of the centre of mass be (X, Y, Z).

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Since,

Comparing the coefficients of  , we get

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