If a galaxy’s redshift measured from Earth implies that it is moving 8,000 km/s away from us owing to the expansion of the universe, an observer in every other galaxy in the universe will also measure a redshift for that galaxy corresponding to a velocity of 8,000 km/s. A. True
B. False

What properties of a moving object are used in determining the object's energy of motion

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.