A20 kg satellite has a circular orbit with a period of 3.1 h and a radius of 8.6 ✕ 106 m around a planet of unknown mass. if the magnitude of the gravitational acceleration on the surface of the planet is 8.1 m/s2, what is the radius of the planet?

Two large, flat, horizontally oriented plates are parallel to each other, a distance d apart. half way betwween the two plates the electric field has magnitude e. if the separation of the plates is reduced to d/2 what is the magnitude of the electric field half way between the plates?

Arock collection comes from which part of earth?

Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm