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den301095 [7]
2 years ago
12

Why are satellites placed into orbit at least 150 km above Earth’s surface?

Physics
2 answers:
il63 [147K]2 years ago
5 0

Answer:

Satellites are placed into orbit at least 150km above Earth's surface to ensure that they remain above the atmosphere.

The velocity required to keep a balance between the inertia of the motion of the satellite and the earth's gravitational pull, which is called the orbital velocity, essentially depends on its distance above the surface of the Earth. The higher this distance, the longer the satellite will stay in the orbit. Otherwise it might run into the atmosphere and could get burnt up there.

hodyreva [135]2 years ago
4 0
Satellites are placed into orbit at least 150 km above Earth's surface to be above the atmosphere.
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A vacuum tube diode consists of concentric cylindrical electrodes, the negative cathode and the positive anode. Because of the a
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Answer:

   C = 4,174 10³ V / m^{3/4} ,  E = 7.19 10² / ∛x,    E = 1.5  10³ N/C

Explanation:

For this exercise we can calculate the value of the constant and the electric field produced,

Let's start by calculating the value of the constant C

           V = C x^{4/3}

           C = V / x^{4/3}

            C = 220 / (11 10⁻²)^{4/3}

            C = 4,174 10³ V / m^{3/4}

To calculate the electric field we use the expression

            V = E dx

             E = dx / V

             E = ∫ dx / C x^{4/3}

            E = 1 / C  x^{-1/3} / (- 1/3)

            E = 1 / C (-3 / x^{1/3})

We evaluate from the lower limit x = 0 E = E₀ = 0 to the upper limit x = x, E = E

            E = 3 / C     (0- (-1 / x^{1/3}))

            E = 3 / 4,174 10³   (1 / x^{1/3})

           E = 7.19 10² / ∛x

for x = 0.110 cm

          E = 7.19 10² /∛0.11

          E = 1.5  10³ N/C

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Using the Equation:
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<span><span>We know that vi = 0 because the ball was at rest initially.
</span><span>
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</span></span> v² = vi² + 2 · a · s
 v² = 0 + 2 · a · s
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a = v ²/2·<span>s
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<span>Now applying Newton's 2nd law of motion,
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