If a proton with mass 1.67 x 10"27 kg moves in an accelerator such that its total energy is five times its rest energy what is its speed? (c 3.00 x 108 m/s) 1.5E-8 m/s 2.7E+8 m/s 6.0E+7 m/s 2.9E+8 m/s 2.4E+8 m/s
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PLEASE ANSWER BOTH!!! Our best measurements from Earth indicate that the star system Alpha Centauri is 4.2 light-years away. Suppose some of our astronauts traveled there at a speed v 0.83c. Wha...
Consider a bright star in our night sky. Assume its distance from Earth is 31.7 light-years...
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Consider a bright star in our night sky. Assume its distance from Earth is 31.7 light-years (ly) and its power output is 4.00 x 1028 W, about 100 times that of the Sun. (a) Find the intensity of the starlight at the Earth. 3.54e-8 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. nW/m² (b) Find the power of the starlight the Earth intercepts. One light-year is the distance traveled...
Before leaving Alpha Centauri, you change from the shuttle to a light speed interstellar cruiser and head out deep into the galaxy to visit another binary star system - but this one is composed of dead stars! To occupy your waking travel time by reading about this star system in the "Outer Space Tourbook": Stars spend most of their lifetimes undergoing nuclear fusion in their cores, which is why they give off so much light. However, when the material necessary...
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