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mathematic

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  1. It is too soon to say. There are about 100 billion stars in the milky way. Only an infinitesimal number has been explored to determine whether life supporting planets exist.
  2. The Big Bang was less than 14 billion years ago. The speed up of the expansion was discovered during the 1990's by using supernova 1A /science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy https://www.e-education.psu.edu/astro801/content/l10_p9.html
  3. Gravity and e-m forces can be made 0 in isolation. Place object halfway in between attractions of equal strength. Also neutral things don't experience e-m.
  4. In the latest issue of American Scientist there is an article by Tony Rothman questioning E=mc^2. Are the assertions made in the article valid? Are there comments by other physicists available?
  5. Several rinses with small amount of water each time is better than one rinse with a lot of water.
  6. It would help if you defined symbols.
  7. Size, shape, speed, impact point. In practice, probability distributions are used.
  8. mathematic

    Tensor

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