The closest other galaxy to our solar system is the Sagittarius Dwarf
Indicate whether the statement is true or false
TRUE
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Potential Energy: A small 4.0-µC charge and a small 1.5-µC charge are initially very far apart. How much work does it take to bring them to a final configuration in which the 4.0-µC charge is at the point x = 1.0 mm, y = 1.0 mm, and the 1.5-µC charge is at the point x = 1.0 mm, y = 3.0 mm? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
A. 27 J B. 13.5 kJ C. 54 J D. 13.5 J
An astronaut on a spaceship moving at 0.927c says that the trip between two stationary stars took How long does this journey take as measured by someone at rest relative to the two stars?
A) 20.0 y B) 2.81 y C) 4.05 y D) 22.1 y
Why do Newton's Laws show a force must be acting on the planets?
What will be an ideal response?
If you hold a light tissue in your hands and gently blow across its top, the tissue will rise slightly because
A. collisions of the moving air with the tissue cause it to rise. B. the pressure of moving air is less than that of static air. C. according to Archimedes' Principle, moving air exerts more buoyant force. D. blowing across the tissue removes all of the air, and then the air below the tissue pushes the tissue up.