31. The height of a geo-stationary satellite from the Earth's surface is approximately :
32. Why is weightlessness experienced while orbiting the earth in space ships ?
33. In the case of bodies falling under gravity which of the following remains constant at a given place?
34. The instrument used to see the distant objects on the Earth is
35. Intensity of gravitational field of earth is maximum at
36. By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?
37. Which is the point from where an azimuth originates?
38. The weight of a body acts through the centre of
39. If the spinning speed of the earth is increased then the weight of body at the equator
40. What is the escape velocity of the rocket in the earth?
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