ls it possible to place an artificial satellite in an orbit so that it is always Visible Over New Delhi. Please answer this question urgently. Please. Please. Please.

Question

Gaurav Yadav · Answer

Hey student. No, A satellite will be always visible only if it revolves in the equatorial plane, but New Delhi does not lie in the region of equitorial plane. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

If the density of a planet is doubled without any change in its radius, how does 'g' change on the planet. Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. 'g' gets doubled as g p (density) This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

Mark the direction of gravitational intensity at (I) centre of a hemispherical shell of uniform mass density (ii) any arbitrary point on the upper surface of hemisphere.

Gaurav Yadav · Answer

Hey student. In both cases, it will be downward. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

Why an astronaut in an orbiting space craft is not in zero gravity although weight less? Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. The astronaut is in the gravitational field of the earth and experiences gravity. However, gravity is used in providing necessary centripetal force, so is in a state of free fall towards the earth. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

Write one important use of (i) geostationary satellite (ii) polar satellite. Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. Geostationary satellite are used for tele communication and polar satellite for remote rensing. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

If suddenly the gravitational force of attraction between earth and satellite become zero, what would happen to the satellite? Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. The satellite will move tangentially to the original orbit with a velocity with which it was revolving. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

Write two characteristics of gravitational force? Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student.

(1) It is a central force

(2) It is a conservation force

(3) It obeys inverse square law.

(4) It is a universal force and is always attractive in nature.

This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

State two essential requisites of geostationary satellite? Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. (1) The period of revolution of a satellite around the earth should be the same as that of earth about its own axis (T=24hrs) (2) The sense of rotation of satellite should be the same as that of the earth about its own axis i.e. from west to east in an anti-clockwise direction This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means?

Gaurav Yadav · Answer

Hey student. No, the Gravitational influence of matter on nearby objects cannot be screened by any means. This is because gravitational force unlike electrical forces is independent of the nature of the material medium. Also, it is independent of the status of other objects.

Nandini Sharma · Answer

An astronaut inside a small space ship orbiting around the earth cannot detect gravity. If the space station orbiting around the earth has a large size, can he hope to detect gravity?

Gaurav Yadav · Answer

Hey student. Yes. If the size of the space station is large enough, then the astronaut will detect the change in Earth's gravity (g). This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

If you compare the gravitational force on the earth due to the sun to that due to the moon, you would find that the Sun's pull is greater than the moon's pull. (You can check this yourself using the data available in the succeeding exercises). However, the tidal effect of the moon's pull is greater than the tidal effect of sun. Why?

Gaurav Yadav · Answer

Hey student. Tidal effect depends inversely upon the cube of the distance while, gravitational force depends inversely on the square of the distance. Since the distance between the Moon and the Earth is smaller than the distance between the Sun and the Earth, the tidal effect of the Moon's pull is greater than the tidal effect of the Sun's pull. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

A comet orbits the Sun in a highly elliptical orbit. Does the comet have a constant (a) linear speed, (b) angular speed, (c) angular momentum, (d) kinetic energy, (e) potential energy, (f) total energy throughout its orbit? Neglect any mass loss of the comet when it comes very close to the Sun.

Gaurav Yadav · Answer

Hey student.

(a) No

(b) No

(c) Yes

(d) No

(e) No

(f) Yes

Angular momentum and total energy at all points of the orbit of a comet moving in a highly elliptical orbit around the Sun are constant. Its linear speed, angular speed, kinetic, and potential energy varies from point to point in the orbit.

This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

Why the space rockets are generally launched West to East? Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. Since the earth revolves from West to east, so when the rocket is launched from west to east the relative velocity of the rocket increases which helps it to rise without much consumption of fuel. This is the answer to your question. Hope this helps you.

Nandini Sharma · Answer

Explain why a tennis ball bounces higher on hills than in plane? Please answer this question urgently. Please. Please. Please.

Gaurav Yadav · Answer

Hey student. The value of 'g' on hills is less than at the plane, so the weight of tennis ball on the hills is lesser force than at planes that is why the earth attract the ball on hills with lesser force than at planes. Hence the ball bounces Higher. This is the answer to your question. Hope this helps you.

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ls it possible to place an artificial satellite in an orbit so that it is always Visible Over New Delhi. Please answer this question urgently. Please. Please. Please.

ls it possible to place an artificial satellite in an orbit so that it is always Visible Over New Delhi.

Please answer this question urgently. Please. Please. Please.

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ls it possible to place an artificial satellite in an orbit so that it is always Visible Over New Delhi. Please answer this question urgently. Please. Please. Please.

ls it possible to place an artificial satellite in an orbit so that it is always Visible Over New Delhi. Please answer this question urgently. Please. Please. Please.

27 Answers

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ls it possible to place an artificial satellite in an orbit so that it is always Visible Over New Delhi.

Please answer this question urgently. Please. Please. Please.