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Physics

General

Easy

Question

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

$\frac{G m}{r^{2}}$
g
zero
None of these

The correct answer is: zero

Related Questions to study

A rocket is launched with velocity 10 $k m s to the power of negative 1 end exponent$ . If radius of earth is R then maximum height attained by it will be =…….

A rocket is launched with velocity 10 $k m s to the power of negative 1 end exponent$ . If radius of earth is R then maximum height attained by it will be =…….

The masses and radius of earth and moon are M₁ ,R₁and M₂ R₂respectively. 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 M₁ ,R₁and M₂ R₂respectively. 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……

If P= $fraction numerator A to the power of 2 end exponent B over denominator C to the power of 3 end exponent end fraction$ where percentage error in $A comma B$ and $C$ are respectively $plus 2 percent sign plus-or-minus 3 percent sign$ and $plus-or-minus 5 percent sign$ then total percentage error in measurement of $p$

If P= $fraction numerator A to the power of 2 end exponent B over denominator C to the power of 3 end exponent end fraction$ where percentage error in $A comma B$ and $C$ are respectively $plus 2 percent sign plus-or-minus 3 percent sign$ and $plus-or-minus 5 percent sign$ then total percentage error in measurement of $p$

physics-General

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The mass of the earth is 6.00 $cross times 10 to the power of 24$ Kg and that of the moon is 7.40 $cross times 10 to the power of 22$ kg. The constant of gravitation G=6.667 $cross times 10 negative 11 to the power of blank$ Nm^-2 kg^--2.The potential energy of the system is -7.79 $cross times 10 to the power of 28$ Joules. the mean distance between the earth and moon is =

The mass of the earth is 6.00 $cross times 10 to the power of 24$ Kg and that of the moon is 7.40 $cross times 10 to the power of 22$ kg. The constant of gravitation G=6.667 $cross times 10 negative 11 to the power of blank$ Nm^-2 kg^--2.The potential energy of the system is -7.79 $cross times 10 to the power of 28$ Joules. the mean distance between the earth and moon is =

$text If end text a with not stretchy bar on top equals ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus 3 k with not stretchy bar on top comma b with not stretchy bar on top equals negative ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus k with not stretchy bar on top comma c with not stretchy bar on top equals 3 ı with not stretchy bar on top plus ȷ with not stretchy bar on top text and end text a with not stretchy bar on top plus t b with not stretchy bar on top$ is perpendicular to $stack c with ‾ on top$ , then $t equals$

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

$text If end text a with not stretchy bar on top equals ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus 3 k with not stretchy bar on top comma b with not stretchy bar on top equals negative ı with not stretchy bar on top plus 2 ȷ with not stretchy bar on top plus k with not stretchy bar on top comma c with not stretchy bar on top equals 3 ı with not stretchy bar on top plus ȷ with not stretchy bar on top text and end text a with not stretchy bar on top plus t b with not stretchy bar on top$ is perpendicular to $stack c with ‾ on top$ , then $t equals$

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

The acute angle made by the line joining the points $left parenthesis 1 comma negative 32 right parenthesis$ and $left parenthesis 3 comma negative 51 right parenthesis$ with the $Y$ -axis is

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

The acute angle made by the line joining the points $left parenthesis 1 comma negative 32 right parenthesis$ and $left parenthesis 3 comma negative 51 right parenthesis$ with the $Y$ -axis is

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

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If $a with bar on top equals negative ı with bar on top plus ȷ with bar on top plus 2 k with bar on top comma b with bar on top equals 2 l with bar on top plus ȷ with bar on top minus k with bar on top comma c with bar on top equals negative 2 l with bar on top plus ȷ with bar on top plus 3 k with bar on top$ then the angle between $2 a with not stretchy bar on top minus c with not stretchy bar on top$ and is

If $a with bar on top equals negative ı with bar on top plus ȷ with bar on top plus 2 k with bar on top comma b with bar on top equals 2 l with bar on top plus ȷ with bar on top minus k with bar on top comma c with bar on top equals negative 2 l with bar on top plus ȷ with bar on top plus 3 k with bar on top$ then the angle between $2 a with not stretchy bar on top minus c with not stretchy bar on top$ and is

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

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

The acceleration of a body due to the attraction of the earth (radius R ) at a distance 2R from the surface of the earth is (g = acceleration due to gravity at the surface of earth)

The acceleration of a body due to the attraction of the earth (radius R ) at a distance 2R from the surface of the earth is (g = acceleration due to gravity at the surface of earth)

Acceleration due to gravity on moon is 1/6 of the acceleration due to gravity on earth, If the ratio of densities of earth $rho subscript theta$ and moon $rho subscript m$ is $rho subscript t over rho subscript equals equals 5 divided by 3$ then radius of moon Rm in terns of Re will be,

Acceleration due to gravity on moon is 1/6 of the acceleration due to gravity on earth, If the ratio of densities of earth $rho subscript theta$ and moon $rho subscript m$ is $rho subscript t over rho subscript equals equals 5 divided by 3$ then radius of moon Rm in terns of Re will be,

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A research satellite of mass 200 kg. circles the earth in an orbit of average radius 3R/2 where R is radius of earth. Assuming the gravitational pall 10N, the pull on the satellite will be...N

A research satellite of mass 200 kg. circles the earth in an orbit of average radius 3R/2 where R is radius of earth. Assuming the gravitational pall 10N, the pull on the satellite will be...N

If the value of ' g ' acceleration due to gravity, at earth surface fs .10ms^-2 its value in ms^-2 at the center of earth, which is assumed to be a sphere of Radius ' R ' meter and uniform density is

If the value of ' g ' acceleration due to gravity, at earth surface fs .10ms^-2 its value in ms^-2 at the center of earth, which is assumed to be a sphere of Radius ' R ' meter and uniform density is

A man can jump to a height of 1.5 m on a planet Α what is the height ne may be able to jump on another planet whose density and radius are respectively one- quater and one- third that of planet A

A man can jump to a height of 1.5 m on a planet Α what is the height ne may be able to jump on another planet whose density and radius are respectively one- quater and one- third that of planet A

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