Recent content by John Constantine

  1. J

    B Relationship between a material wave and the uncertainty of position and momentum

    I'm sorry to bother you. I can only do high school level math. Can you briefly explain what that relation means?
  2. J

    B Relationship between a material wave and the uncertainty of position and momentum

    I'm just an ordinary person who's very interested in physics. I'm posting a question because I'm curious about quantum mechanics. The wavelength of the material wave that can be obtained when a baseball with a mass of 150 g is thrown at 40 m/s is 1.1×10^-34m by the h/mv formula. As you can see...
  3. J

    I How do we calculate the energy we used to do something?

    I'm just wondering if the same resistance from the pedals, whether they're on a road bike or stationary bike, and if the speed of the pedal is the same, the energy that a cyclist consumes would be the same. I think it will be similar to the situation below. There's a person A in outer space. A...
  4. J

    I How do we calculate the energy we used to do something?

    Usually, I like to take a physical approach to phenomena that occur in everyday life. But I feel difficult to solve problems because I don't have higher education My question stems from this question (What's the difference between running up a hill and running up an inclined treadmill?), which...
  5. J

    What is Physics? A Beginner's Guide to Understanding the World Around Us

    I'm an ordinary person who's very interested in physics. I'm happy to get a lot of information.
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