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Physics
Physics
Uncover the laws that govern the universe, from the smallest particles to the vastness of space. Physics seeks to explain the fundamental mechanisms of the natural world.
225k
Questions
Q: Why can't perpetual motion machines work and what are the fundamental laws of physics that prevent their existence
1 answer
Q: Why can't quantum entanglement be used for communication
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Q: Why can't stars fuse iron, leading to their eventual collapse and supernova explosion
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Q: Why can your body conduct electricity
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Q: Why can't I feel the Earth spinning
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Q: Why can't I open the soda bottle
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Q: Why can't a magnet pull a car
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Q: Why can't a submarine go to the bottom of the ocean
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Q: Why can't anything travel faster than light
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Q: Why can't carbon-14 dating be used on dinosaur remains, and what alternative methods are used to determine the age of dinosaur fossils
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Q: Why can't energy be created
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Q: Why can some bugs walk on water
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Q: Why can the fusion of iron into heavier elements not support a star
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Q: Why can we see light
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Q: Why can we see objects because light is present
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Q: Why can we see the moon because it reflects sunlight
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Q: Why can we see the sun
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Q: Why can you balance an egg on a nail at the equator
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Q: Why can you relight a candle from the smoke
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Q: Why can you see someone clearly through a clear glass window but not through a frosted glass window
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Q: Why can light change materials in different ways
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Q: Why can metal conduct electricity
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Q: Why can money be used as an analogy for energy, and how do these statements explain the relationship between the two
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Q: Why can nothing be faster than light
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Q: Why can nothing go faster than light
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Q: Why can nothing travel faster than light
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Q: Why can planes fly upside down
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Q: Why can quantum entanglement not be used for communication
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Q: Why can small animals survive falls
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Q: Why can an iron core not support a star
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Q: Why can an object with a nonzero mass never travel as fast as the speed of light
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Q: Why can angular momentum not be conserved if an external torque is applied to a rotating object
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Q: Why can ants lift so much weight
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Q: Why can bugs walk on water
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Q: Why can ferromagnetic materials become magnets and how does this process occur
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Q: Why can iron filings be used to visualize a magnetic field
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Q: Why can iron fusion not support a star because of iron
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Q: Why can light cause materials to change
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Q: Why aren't bullets sharp
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Q: Why aren't you able to see the planets around the sun
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Q: Why can I jump so high
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Q: Why can I see better out of the bottom of my glasses
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Q: Why can I see underwater without glasses
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Q: Why can a mass spring system oscillate with simple harmonic motion when compressed
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Q: Why can a microwave cook a potato more efficiently and quicker
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Q: Why can a perpetual motion machine never be built because it is not possible to eliminate the inherent energy losses in any physical system
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Q: Why can a water strider walk on water
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Q: Why are umbrellas typically black in color
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Q: Why are velocity and displacement both considered vector quantities
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Q: Why are voltages always measured between two points
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