From the fact that virtually every galaxy is moving away from us and more distant galaxies are moving away from us at a faster rate than closer ones, we conclude that
A) the Milky Way Galaxy is expanding.
B) we are located at the center of the universe.
C) the farthest galaxies will eventually be moving faster than the speed of light.
D) the universe is expanding.
E) the universe is shrinking.
D
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A 95 N force exerted at the end of a 0.50 m long torque wrench gives rise to a torque of What is the angle (assumed to be less than 90°) between the wrench handle and the direction of the applied force?
A) 18° B) 14° C) 22° D) 25°
In a single-slit diffraction experiment, the width of the slit through which light passes is reduced. What happens to the width of the central bright fringe?
A) It becomes narrower. B) It stays the same. C) Its behavior depends on the wavelength of the light. D) It becomes wider.
Earth satellites are typically more than 100 km high so as to be above Earth's
A) atmosphere. B) gravitational field. C) both of these
Two stars have the same spectral type. Star X is in luminosity class III, while Star Y is in luminosity class V. Therefore, Star X is larger in radius than Star Y
Indicate whether the statement is true or false