¿Por qué se sostiene que dicho modelo de negociación colectiva tendió a favorecer la homogeneización de los salarios?

Why are some galaxies’ spectra blueshifted rather than redshifted? question 4 options:

Which of the following represents a virtual image?

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)