There are two isotopes of carbon. Carbon-14 is radioactive. Carbon-12 is stable. The half life of Carbon-14 is 5730 years. Carbon-14 is produced naturally in the atmosphere and absorbed by all living things. Therefore, in all living things, the ratio of Carbon-14 to Carbon-12 is the same and remains constant. In a sample of dead organic material, the ratio of Carbon-14 to Carbon-12 is found to be 4/5 of the expected value for living material. The best estimate of the age of the dead organic material is:

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Q: 3. You hike for 1.9 hours at a velocity of 3 mph in due northwest. Then you head 15.9° South of East…

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Q: WHAT WOULD HAVE A LARGER RADIUS F- OR N3-

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A: Given Mass m= 0.2 kg Initial velocity u= 12 m/s Initial gravitation potential energy=0 J

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A: mass of wood = 30 kg density of wood = 500 kg/m3volume of wood = mass/density  = 30/500  = 0.06…

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A: Given that:- Mass of the stack of bricks=m=200kg

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A: The resistances are R1 = 8.44 kΩ R2 = 8.52 kΩ R3 = 7.69 kΩ  Voltage ∆V = 10 V

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A: Given that:- Critical angle=45°

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.