A communications satellite with a mass of 375 kg is in a circular orbit about the Earth. The radius of the orbit is 25,500 km as measured from the center of the Earth. (a) Calculate the weight of the satellite on the surface of the Earth. Calculate the gravitational force exerted on the satellite by the Earth when it is in orbit.

Aray diagram for a refracted light day is shown. what does the dashed line represent

In the derivation of rrkm theory, a factor of 1/2 is introduced when equalizing the rates of formation and decomposition of activated complex as keal-hr) = ko this is clearly against the assumption of transition state theory that states all the activated complex in the transition state iss going to the product. find the reason why this factor is introduced here.

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s