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The ratio of electric and gravitational ...

The ratio of electric and gravitational force between two protons.Charge of each proton is `1.6times10^(-19)C` mass is `1.67times10^(-27)Kg` and G=`6.67times10^(-11)Nm^(2)Kg^(-2)` .

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The distance between the electron and proton in hydrogen atom is 5.3xx10^(-11) m. Determine the magnitude of the ratio of electrostatic and gravitational force between them. Given m_(e)=9.1xx10^(-31) kg, m_(p)=1.67xx10^(-27) kg, e=1.6xx10^(-19) C " and " G=6.67xx10^(-11) Nm^(2) kg^(2) .

Calculate the gravitational field strength and the gravitational potential at the surface of the moon. The mass of the moon is 7.34xx10^(22)kg and its radius is 1.74xx10^(6)m . (G=6.67xx10^(-11) Nm^(2)kg^-2).

Knowledge Check

  • Calculate the ratio of electrostatic to gravitational force between two electrons placed at certain distance in air. Given that m_(e)= 9.1xx10^(-31) kg,e= 1.6xx10^(-19)C and G=6.6xx10^(-11)Nm^(-2) .

    A
    `8.4xx10^(42)`
    B
    `3.2xx10^(41)`
    C
    `4.2xx10^(42)`
    D
    `1.2xx10^(42)`

  • The ratio of electrostatic and gravitational force acting between electron and proton separated by a distance 5 xx 10^(-11)m , will be (charge on electron = 1.6 xx 10^(-19)C , mass of electron = 9.1 xx 10^(-31) kg , mass of proton = 1.6 xx 10^(-27) kg, G = 6.7 xx 10^(-11) N - m^(2)//kg^(2) )

    A
    `2.36 xx 10^(39)`
    B
    `2.36 xx 10^(40)`
    C
    `2.34 xx 10^(41)`
    D
    `2.34 xx 10^(42)`

  • The centres of two identical spheres are 50 cm apart. If the gravitational force between the spheres be 4.0 N , find the mass of each sphere. Given, G = 6.67 xx 10^(-11) Nm^(2)kg^(-2) .

    A
    `2 xx 10^(6) kg`
    B
    `1.22 xx 10^(8) kg`
    C
    `4 xx 10^(3) kg`
    D
    `1.22 xx 10^(5) kg`

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    How many protons weight 5kg? The mass of a proton is 1.67xx10^(-27)kg .

    The distance between earth and moon is 3.8 xx 10^(8)m . Determine the gravitational potential energy of earth-moon system. Given, mass of the earth = 6 xx 10^(24) kg , mass of moon = 7.4 xx 10^(22)kg and G = 6.67 xx 10^(-11) Nm^(2) kg^(-2)

    The centre of two identical spheres are 1.0 m apart . If the gravitational force between the spheres be 1.0 N , then what is the mass of each sphere ? (G = 6.67 xx 10^(-11) m^(3) kg^(-1) s^(-2)) .

    Calculate the gravitational force of attraction between two spherical bodies, each of mass 1kg placed at 10m apart (G = 6.67 xx 10^(-11)Nm^(2)//kg^(2)) .

    A satellite of mass 2000 kg is revolving around the earth in a circular orbit of radius 4xx10^(4) km. The gravitational force exerted by the satellite on the earth is ________. [Mass of the earth = 6xx10^(24)kg, G=6.67xx10^(-11)Nm^(2)//kg^(2) ]

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