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Gnoma [55]
3 years ago
14

Help Me Please8th grade science, one question ​

Physics
1 answer:
nexus9112 [7]3 years ago
4 0
You can make a laser go through someone’s skin in some circumstances you can’t do that with other light sources
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In his experiments on "cathode rays" during which he discovered the electron, J.J. Thomson showed that the same beam deflections
Andrews [41]

Answer:

A) his observation is of little importance ,

B) This observation is very important since the movement of the point of light depends on the relationship between the already magnetic electric force

C)   see that in this second case it is 4 times less  

D) the force of gravity is of the order of 10⁻⁴⁰

therefore it is 10²⁸ times less than the electric force,

Explanation:

A) This observation is of little importance since the cacodylate ray tube always emits electrons, regardless of the material of which it is made.

B) This observation is very important since the movement of the point of light depends on the relationship between the already magnetic electric force

C) the elect's load is 1.6 10⁻¹⁹ C its mass is 9.1 10⁻³¹ kg, let's look for its relation

        e / m = 1.6 10⁻¹⁹ / 9.1 10⁻³¹

         e / m = 0.1 758 10 10¹² N

look for this in the case of an atom, let's use the lightest atom hydrogen

the homogenize have an electron of charge 1.6 10⁻¹⁹ C

and a mass of 1.6735575 10⁻²⁷ ka

        e / M = 1.6 10⁻⁻¹⁹ / 1.67 10⁻²⁷

       e / M = 0.96 10⁸ N

We see that in this second case it is 4 times less

D) the force of gravity is of the order of 10⁻⁴⁰

therefore it is 10²⁸ times less than the electric force, therefore it should not contribute to the movement of the light beam

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Burning a log because you are turning the log into ash from wood.
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katen-ka-za [31]

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a. The net force acting on it is zero.

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zhuklara [117]

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I would say d sry if im wrong

Explanation:

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Calculate the current in a circuit whose total resistance is 4 ohms and whose emf is 12 volts.
marishachu [46]
V = I R
12 = I x 4
I = 12 ÷ 4 = 3 A
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3 years ago
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