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valkas [14]
3 years ago
7

What was J.J Thompson working on when we discovered the electron?

Physics
1 answer:
adell [148]3 years ago
7 0
J.J. Thomson used a cathode ray tube to discover the electron. Cathode ray tubes are vacuum tubes that contain two electrodes - one on each side. One of the electrodes (the cathode) fires electrons at the other (the anode) when voltage is added to the system.
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scoray [572]

Answer:

 F = 2.30 10⁴ N

Explanation:

The force required to link two gates must be equal to or greater than the electrostatic force of repulsion, because the protons have equal charges.

                 F = k q₁ q₂ / r²

Where k is the Coulomb constant that is worth 8.99 10⁹ N m² / C²

   In this case the proton charge is 1.6 10⁻¹⁹ C and the distance between them is approximately the diameter of the core r = 10⁻¹⁵ m

Let's calculate

              F = 8.99 10⁹ (1.6 10⁻¹⁹)² / (10⁻¹⁵)²

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3 years ago
Aprproximately how much electrical energy does a 5-W lightbulb convert to radiant and thermal energy in one hour
madreJ [45]

Answer:

Energy, E = 18 kJ

Explanation:

Given that,

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1 hour = 3600 seconds

Electric power :

P=\dfrac{E}{t}\\\\E=P\times t\\\\E=5\ W\times 3600\ s\\\\E=18000\ J            

or

E = 18 kJ

So, 18 kJ of electrical energy a 5-W lightbulb convert to radiant and thermal energy in one hour.

8 0
3 years ago
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Fittoniya [83]
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Hope this helps!
7 0
3 years ago
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Through which of these media do sound waves travel the fastest?
Nimfa-mama [501]

Answer:

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5 0
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kolezko [41]

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Explanation:

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3 years ago
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