Physics

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# Energy required to move a body of mass m from an orbit of radius 2R to 3R is

## The correct answer is:

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### A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is….

### A body is projected vertically upwards from the surface of a planet of radius R with a velocity equal to half the escape velocity for that planet. The maximum height attained by the body is….

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### The Gravitational P.E of a body of mas m at the earth's surface is -mg Re. Its gravitational potential energy at a height Re from the earth's surface will be = here (Re is the radius of the earth),

### The Gravitational P.E of a body of mas m at the earth's surface is -mg Re. Its gravitational potential energy at a height Re from the earth's surface will be = here (Re is the radius of the earth),

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### The Gravitational P.E of a body of mas at the earth's surface is -mg Re. Its gravitational potential energy at a height Re from the earth's surface will be = here (Re is the radius of the earth),

### The Gravitational P.E of a body of mas at the earth's surface is -mg Re. Its gravitational potential energy at a height Re from the earth's surface will be = here (Re is the radius of the earth),

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### Escape velocity of a body of 1 kg. on a planet is 100ms^{-1} . Gravitational potential energy of the body at the planet is =.....j

### Escape velocity of a body of 1 kg. on a planet is 100ms^{-1} . Gravitational potential energy of the body at the planet is =.....j

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### What is the intensity of gravitational field at the center of spherical shell

### What is the intensity of gravitational field at the center of spherical shell

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### A rocket is launched with velocity 10. If radius of earth is R then maximum height attained by it will be =…….

### A rocket is launched with velocity 10. If radius of earth is R then maximum height attained by it will be =…….

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### The masses and radius of earth and moon are M_{1} ,R_{1 }and M_{2} R_{2 }respectively. Their centres are d distance of apart. The minimum velocity with which a particle of mass should be projected from a point mid way between their centres so that it escapes to infinity is……

### The masses and radius of earth and moon are M_{1} ,R_{1 }and M_{2} R_{2 }respectively. Their centres are d distance of apart. The minimum velocity with which a particle of mass should be projected from a point mid way between their centres so that it escapes to infinity is……

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### If P= where percentage error in and are respectively and then total percentage error in measurement of

### If P= where percentage error in and are respectively and then total percentage error in measurement of

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### The mass of the earth is 6.00 Kg and that of the moon is 7.40 kg. The constant of gravitation G=6.667Nm^{-2} kg^{--2}.The potential energy of the system is -7.79 Joules. the mean distance between the earth and moon is =

### The mass of the earth is 6.00 Kg and that of the moon is 7.40 kg. The constant of gravitation G=6.667Nm^{-2} kg^{--2}.The potential energy of the system is -7.79 Joules. the mean distance between the earth and moon is =

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### is perpendicular to , then

For this question, we should know the rules of dot product.

### is perpendicular to , then

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For this question, we should know the rules of dot product.

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### The acute angle made by the line joining the points and with the -axis is

We should remember the formula of direction cosines of all the angles.

### The acute angle made by the line joining the points and with the -axis is

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We should remember the formula of direction cosines of all the angles.

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### If then the angle between and is

### If then the angle between and is

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### In a gravitational field, at a point where the gravitational potential is zero

### In a gravitational field, at a point where the gravitational potential is zero

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### A spherical planet has a mass MP and diameter Dip A particle of mass falling freely near the surface of this planet will experience an acceleration due to gravity, equal to

### A spherical planet has a mass MP and diameter Dip A particle of mass falling freely near the surface of this planet will experience an acceleration due to gravity, equal to

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### The height at which the weight of a body becomes 1/16 th its weight on the surface of (radius R) is

### The height at which the weight of a body becomes 1/16 th its weight on the surface of (radius R) is

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