The mass and radius of a solid sphere are given by `M_(0)` = `2times10^(30)kg` and `R_(0)` = `7times10^(5)`km respectively.The pressure at the centre is about `x times10^(14)N/m^(2)`. `x` = ______(G=`6.67times10^(-11)``m^(3)``Kg^(-1)``s^(-2)`)

The uncertainties in the potisition and velocity of particle are 3.14 xx 10^(-10)m and 5.27 xx 10^(-24) m//s respectively . Calculate mass of the particle.

The magnetic field in a plane electromagnetic wave is given by B_(y) = 2 xx 10^(-7) sin (0.5 xx 10^(3)x + 1.5 xx 10^(11) t) . This electromagnetic wave is

The uncertainty in the position and velocity of a particle are 10^(-10)" m and "5.27 xx 10^(-24)" m s"^(-1) respectively. Calculate the mass of the particle (h = 6.625 xx 10^(-34)" Js").

A spaceship is satationed on Mars. How much energy must be expended on the space ship to rocket it out of the solar system ? Mass of the space ship = 1000 kg. Mass of the sun = 2 xx 10^(30 ) kg , Mass of Mars = 6.4 xx 10^(23) kg , radius of Mars = 3395 km, radius of the orbit of Mars = 2.28 xx 10^(8) km, G = 6.67 xx 10^(-11) Nm^(2) kg^(-2)

The mass of the earth is 6 × 10^(24) kg and that of the moon is 7.4 xx 10^(22) kg. If the distance between the earth and the moon is 3.84xx10^(5) km, calculate the force exerted by the earth on the moon. (Take G = 6.7 xx 10^(–11) N m^(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)) .

A wheel has moment of inertia 5 xx 10^(-3) kg m^(2) and is making 20 "rev" s^(-1) . The torque needed to stop it in 10 s is….. xx 10^(-2) N-m

The rms velocity molecules of a gas of density 4 kg m^(-3) and pressure 1.2 xx 10^(5) N m^(-2) is

The rms velocity molecules of a gas of density 4 kg m^(-3) and pressure 1.2 xx 10^(5) N m^(-2) is

Take the mean distance of the moon and the sun from the earth to be 0.4 xx 10^(6) km and 150 xx 10^(6) km respectively. Their masses are 8 xx 10^(22) kg and 2 xx 10^(30) kg respectively. The radius of the earth of is 6400 km . Let DeltaF_(1) be the difference in the forces exerted by the moon at the nearest and farthest points on the earth and DeltaF_(2) be the difference in the force exerted b the sun at the nearest and farthest points on the earth. Then, the number closest to (DeltaF_(1))/(DeltaF_(2)) is :