Recent content by Sabalaba

  1. S

    "Critical" in reflected and refracted rays

    Thank you for you help:smile:
  2. S

    "Critical" in reflected and refracted rays

    Hello, I didnt understand what the "critical" in critical rays are. I didnt understand the meaning. Can someone help, please. Thanks.
  3. S

    How can you accurately hit a trash bin while biking with an apple core?

    how did you get 8,73 m/s on a)?
  4. S

    How fast does the Earth need to move to provide centripital acceleration

    ok, thank u! The problems are so hard
  5. S

    How fast does the Earth need to move to provide centripital acceleration

    How did u do c,d and e??