Science

Why is Earth is the omnipresent conductive surface?

  1. 👍 0
  2. 👎 0
  3. 👁 182
  1. Water in soil, water in streams, water in ocean are conductors. Ions easily flow. This makes for an excellent reference level, or "ground" as we have named it. There is no mistake in calling it ground, as it does conduct easily. Now some Earths are not all that great. Under my HF radio tower, on a sheet of rock..that is a terrible ground plane, so wires are strung under the soil radially, to simulate a ground so the radio wave can propagate radially. http://www.sgcworld.com/Images/Technical/radialarray1.jpg

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    On a cloudless day, the sunlight that reaches the surface of the earth has an intensity of about 1.2 103 W/m2. What is the electromagnetic energy contained in 6.4 m3 of space just above the earth's surface?

    asked by Sarah on October 28, 2013
  2. Science

    1.)Why is Earth’s temperature just right for life? (1 point) A.)Earth’s core is hot enough to heat Earth’s surface. B.)Earth’s magnetic field creates suitable temperatures on Earth’s surface. C.)Earth’s crust is warmed

    asked by YRN DJ on December 7, 2015
  3. physics

    A rocket is launched vertically from Earth's surface with a velocity of 3.4 km/s. How high does it go: From Earth's centre? From Earth's surface? how can this be done without any time or force mentioned ??

    asked by matin on May 9, 2012
  4. Algebra 1

    Earth has a radius of about 6.4 x 10 to the 6th power m. Approximate the surface area of earth using the formula for the surface area is a sphere, S = 4 pi r squared. Earths surface is about 70 percent water. About how many square

    asked by Lauren on February 19, 2015
  5. Physical Science

    Many people mistakenly believe that the astronauts who orbit Earth are "above gravity." Earth's mass is 6×1024kg, and its radius is 6.38×106m (6380 km). Use the inverse-square law to find a height above Earth's surface at that

    asked by Hannah on June 21, 2016
  1. Physics

    Many people mistakenly believe that astronauts who orbit the Earth are "above gravity." The mass of the Earth is 6x10 ^ 34 kg and radius is 6.38x10 ^ 6 m (6380 km) Use Newton's law to show that in the territory of the special

    asked by Dunn on January 25, 2018
  2. physics- please help me!

    Earth turns on its axis approximately once every 24 hours. The radius of Earth is 6.38 X 10^6 m. a.) If some astronomical catastrophe suddenly brought Earth to a screeching halt (a physical impossibility as far as we know), with

    asked by rory on December 9, 2008
  3. Physics

    Calculate the percentage of Earth’s gravitational force on the ISS astronauts while orbiting at an altitude of 248 miles above Earth’s surface. To do this, compare the gravitational force on an orbiting astronaut to the force

    asked by Haley on January 28, 2014
  4. PHYSICS

    THE MASS OF VENUS IS 81.5% OF THE EARTH AND ITS RADIUS IS 94.9% THAT OF THE EARTH. A)COMPUTE THE ACCELERATION DUE TO GRAVITY ON THE SURFACE OF VENUS FROM THESE DATA.B)IF A ROCK WEIGHS 75.0N ON EARTH,WHAT WOULD IT WEIGH ON THE

    asked by GIFT on August 4, 2014
  5. Physics

    Calculate the force of gravity on a spacecraft 19200 km (3 earth radii) above the Earth's surface if its mass is 1600 kg. Hint: At three earth radii from the surface of the Earth, the gravity force (weight) of the spacecraft will

    asked by Scotty on January 7, 2007
  6. science

    How much below the surface of the earth does the acceleration due to gravity become 1percent of its value at the earth surface? The earth is assume to be a sphere of radius 6.4×10^6m.

    asked by Ioba Bolwary Marak on June 25, 2016

You can view more similar questions or ask a new question.