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• Does a crosswind increase drag on forward motion?

  Asked by thorninmud | 10 responses

• Who's at fault for the death of Nodar Khokhobashvili?

  Asked by lilikoi | 17 responses

• Did you see the Larry King show Friday night with Depak Chopra, Father Robert Spitzer, and Leonard Mlodinow (Stephen Hawking's co-author of "The Grand Design"?

  Asked by Ben_Dover | 7 responses

• I have a vehicle that came standard with 16" wheels but now has older 15" wheels. What if any difference will be in fuel economy because of this?

  Asked by woodcutter | 9 responses

• (5) A 6500-kg helicopter accelerates upward at 0.60 m/s² while lifting a 1200-kg car. (a) What is the lift force exerted by the air on the rotors? (b) What is the tension in the cable (ignore its mass) that connects the car to the helicopter?

  Asked by Neha153 | 7 responses

• What is conceivably sharpest?

  Asked by Ltryptophan | 12 responses

• What did you think of Felix's jump?

  Asked by Luiveton | 18 responses

• What holds molecules of water together?

  Asked by Bill1939 | 9 responses

• What type of lighting will produce the most visible beam in daylight?

  Asked by pallen123 | 10 responses

• Snap fit calculations?

  Asked by Jonathan_hodgkins | 6 responses

• Were all quarks, leptons and gluons quantum entangled by the Big Bang? If so, what decoupled them?

  Asked by ETpro | 8 responses

• Those blood cells you can see when you look at the sky--are those in the lens of your eye, or the retina, or where?

  Asked by SaganRitual | 3 responses

• What will be the outcome of our universe?

  Asked by bonj from iPhone | 7 responses

• Whose help do I need to recreate this concept of an UV shoe sanitizer?

  Asked by rexpresso | 4 responses

• Does Hot stuff get Colder than Warm stuff when cooling?

  Asked by SebastianUllmark | 7 responses

• How high can one throw a frisbee?

  Asked by RHGMCG | 6 responses

• What is the simplest way to calculate calories needed to lose weight?

  Asked by pallen123 | 12 responses

• Are the four known forces subject to thermodynamic law?

  Asked by AstroChuck from iPhone | 5 responses

• How long does helium last in a mylar balloon and does it deflate or stop floating because the helium escapes, or does helium degrade?

  Asked by pallen123 | 16 responses

• How can we use electronics to detect explosives?

  Asked by krrazypassions | 9 responses

• Is there a positive charge EMP? Can electricity be contained?

  Asked by Zyx | 6 responses

• Where can I find an online reference explaining temperature, volume and pressure relationship?

  Asked by muhammajelly | 10 responses

• Why does a camera flash need to happen at the moment of the picture?

  Asked by Ltryptophan from iPhone | 9 responses

• A tough physics/fluids question?

  Asked by waterskier2007 | 10 responses

• What are some good websites to help with physics and calc review?

  Asked by nicky | 6 responses

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