Astronomy has shown us that the fundamental laws of physics are
A) the same everywhere in the universe
B) the same in our solar system but different beyond the solar system
C) completely random and unpredictable
D) different on other planets in our solar system
A
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During its descent into Titan's atmosphere, the Huygens probe found
A) large oceans of liquid methane covering the entire surface B) small pools of liquids directly beneath its descent path C) a completely smooth, frozen surface with no sign that any liquids had ever been present D) no sign of flowing or pooled liquids currently on the surface although channels carved in the past by fluids were seen
A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal. The rock strikes the ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown. Assume that the ground is level and that the side of the building is vertical. Determine the speed with which the rock was thrown.
A. 72 ft/s B. 77 ft/s C. 68 ft/s D. 82 ft/s E. 87 ft/s
Briefly describe the order of creation of normal matter in the Big Bang
What will be an ideal response?
A uniform solid sphere is rolling without slipping along a horizontal surface with a speed of 5.50 m/s when it starts up a ramp that makes an angle of 25.0° with the horizontal
What is the speed of the sphere after it has rolled 3.00 m up the ramp, measured along the surface of the ramp? A) 8.02 m/s B) 3.53 m/s C) 1.91 m/s D) 4.01 m/s E) 2.16 m/s