If `1 kg (mm)^(-2)=ymg(km)^(-2)` find y.

1 kg m//s^(2) =___gm- mm//s^(2)

The velocity of three molecules, are 2 km s^(-1), 4 km s^(-1), 6 km s^(-1) . Find mean square velocity.

The velocity of three molecules, are 2 km s^(-1), 4 km s^(-1), 6 km s^(-1) . Find root mean square velocity.

The equation of a damped oscillator of mass 1kg is (d^(2)y)/(dt^(2)) = - 25 y + 6 (dy)/(dt) . Find its angular frequency.

A stress of 1 kg mm^(-2) is applied to a wire of which Young's modulus is 10^(11) Nm^(-2) and 1.1xx10^(11) Nm^(-2) . Find the percentage increase in length.

If y + (1)/(2y) = 4 , then find y^(2) + (1)/(4y^(2))

An artificial satellite revolves round the earth at a height of 1000 km . The radius of the earth is 6.38xx10^(3)km . Mass of the earth 6xx10^(24)kg,G=6.67xx10^(-11)Nm^(2)kg^(-2) . Find the orbital speed and period of revolution of the satellite.

A plane is in level flight at a constant speed such that the speed of the air below the wings is "144 km h"^(-1) and above the wing is "180 km h"^(-1) . If each of its wings has an area of "25 m"^(2) , then the mass (in kg ) of the plane is [rho_("air")="1 kg m"^(-3),g=10ms^(-2)]

Find the area bounded by curves (x-1)^(2)+y^(2)=1 and x^(2)+y^(2)=1

Longitudinal stress of 1" kg/mm"^(2) is applied on a wire. The percentage increase in length is (Y=10''" N/m"^(2))