A) a mass-spring system oscillates up and down with a period T when stationary in the inertial frame of an earthbound observer. The same system is then moved past the earthbound observer, with a velocity which in the observers frame is constant and of magnitude 0.55c. The observer now determines the period to be? B) the energy output of the sun is 5.67x10^26 J/S. Matter is converted to energy in the sun at the rate of ? C) an astronaut whose pulse frequency remains constant at 1.2 beats/sec in sent on a voyage. What would her pulse beat be per min, relative to earth, when the ship is moving relative to earth at 0.956c? D) the total energy of a certain muon, a particle with a rest energy of 105.7 MeV, is 106MeV. What is it's kinetic energy