In Archimedes’ principle experiment, the weight of the object was measured in air and recorded (1.083 N). The object was placed in water, and the apparent weight of the object was measured to be 0.873 N. Determine the density of the object (in kg/m3). (density of water is 1.00 x 103 kg/m3 and g = 9.80 m/s2)

According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?