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• Best website for learning astronomy?

  Asked by advilicious | 7 responses

• What is the speed of a wheel when/where it touches the pavement?

  Asked by WestRiverrat | 6 responses

• Is the University of Arizona known for it's physics programs?

  Asked by Daniel011 | 11 responses

• Could rail gun technology be used to decelerate an object?

  Asked by Ltryptophan from iPhone | 9 responses

• If you were in charge of the James Webb Space Telescope, what questions would you prioritize answering about the cosmos?

  Asked by gorillapaws | 9 responses

• What would change if energy could be created/destroyed?

  Asked by Ltryptophan | 13 responses

• Is there such a thing as going to Mars, and if not why not?

  Asked by flo | 28 responses

• Which is more effective at keeping an object attached to a flat surface: One big suction cup, or multiple smaller suction cups?

  Asked by ragingloli | 8 responses

• Would rotating arms on a spacecraft (like in Sci-Fi movies) actually produce artificial gravity?

  Asked by gorillapaws | 9 responses

• Do you agree with the following quote about photons' mass?

  Asked by luigirovatti | 29 responses

• How many square inches of dry sand make a pound?

  Asked by pallen123 | 16 responses

• Should I drop this Physics course?

  Asked by Hobbes | 8 responses

• Do you believe in the concept of infinity?

  Asked by Blondesjon from iPhone | 44 responses

• What is the voltage/amperage of an electric fence?

  Asked by Poser from iPhone | 14 responses

• Which scientist will destroy the world first?

  Asked by Xpress411 | 11 responses

• Why is there more matter than antimatter?

  Asked by mattbrowne | 11 responses

• What are some facts, or skills , that you have problems learning that others seem to be able to master easy?

  Asked by RedDeerGuy1 | 15 responses

• How do you calculate the power output of 238Pu over 25 years?

  Asked by dr34m3r | 6 responses

• What will happen when the earth's core cools?

  Asked by RareDenver | 16 responses

• How do I use cheap MPPT charge controllers for DC-DC conversion?

  Asked by muhammajelly | 7 responses

• Do our eyes digest light?

  Asked by Ltryptophan from iPhone | 13 responses

• What equation to use?

  Asked by ChipSkylark3220 | 2 responses

• Resistivity of saline at various frequencies?

  Asked by Jonathan_hodgkins | 2 responses

• What happens when you break quark bands?

  Asked by Brian_Ghilliotti | 2 responses

• Cosmology: Why do we think that the universe is expanding right now?

  Asked by krrazypassions | 16 responses

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