surface

  1. M

    A fish is 220 cm below the surface of a pond.?

    A fish is 220 cm below the surface of a pond. What is the apparent depth when viewed from a position almost directly above the fish? (for water n = 1.33 ) Answer in units of cm.
  2. E

    How many geostationary satellites would it take to cover the earth's surface?

    I've figured via Keplers 3rd law that mean altitude for a satellite is about 42,000Km and subtracting Earth's radius gives an altitude of 35000Km. However, what if you wanted a satellite system to give full coverage of the earth's surface, how can you calculate the number of geostationary...
  3. H

    The surface Temperature of Venus is about 1050K, and the pressure is about

    75"earth" atm(STP and molar volumeQ? The surface Temperature of Venus is about 1050K, and the pressure is about 75"earth" atm. Assuming these conditions represent a Venusian STP, what is the "standard" molar volume(in liters) of a gas on Venus? please show your work im trying to learn here!
  4. V

    Tiny Orange Bugs On My Tropical Fish Tank Water Surface?

    I have found large numbers of tiny orange bugs floating on top of two of my Cichlid tanks. In a 55Gallon I have a Jack Dempsey and a few Green Terrors, and in the other 30Gallon tank there are three Convicts. Both tanks have a huge number of these little bugs in the water surface and the glass...
  5. C

    What helped map 98% of Venus's surface?

    I have a question on a paper that asks that and I don't think that it os Venera 9. Please help?
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