How does the energy of the cosmic microwave background compare to the energy radiated by all the stars and galaxies that ever existed

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

If the speed of a particle triples ,by what factor does its kinetic energy increase?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm