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MakcuM [25]
3 years ago
5

What is characteristic of a good insulator?

Physics
2 answers:
Aneli [31]3 years ago
7 0

Answer:

Explanation:

D, when electrons are not free to move.. the material is a good insulator

melamori03 [73]3 years ago
7 0

Answer:

D. Electrons are tightly bound to the nuclei.

Explanation:

In an insulator, the electrons of the outer most shell are bound with a very high electrostatic forces coming from the nucleus of each atom so electrons cannot flow around all atoms making up the material as in a conductor.

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According to newton's second law of motion, when an object is acted on by an unbalanced force, how will that object respond?
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D. It will accelerate
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A spring on a horizontal surface can be stretched and held 0.2 m from its equilibrium position with a force of 16 N. a. How much
nekit [7.7K]

Answer:

a   W_{3.5} = 490 \  J

b  W_{2.5} =  250 \  J

Explanation:

Generally the force constant is mathematically represented as

       k  = \frac{F}{x}

substituting values given in the question

=>   k  = \frac{16}{0.2}

=>   k  =  80 \ N /m

Generally the workdone  in stretching the spring 3.5 m is mathematically represented as

       W_{3.5} =  \frac{1}{2}  *  k  *  (3.5)^2

=>     W_{3.5} =  \frac{1}{2}  *  80  *  (3.5)^2

=>    W_{3.5} = 490 \  J

Generally the workdone  in compressing the spring 2.5 m is mathematically represented as

        W_{2.5} =  \frac{1}{2}  *  k  *  (2.5)^2

=>      W_{2.5} =  \frac{1}{2}  *  80 *  (2.5)^2

=>       W_{2.5} =  250 \  J

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3 years ago
After watching a news story about a fire in a high rise apartment building, you and friend decide to design an emergency escape
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Answer:

You have been hired as part of a research team consisting of ... Torque: After watching a news story about a fire in a high rise apartment building, you and your friend decide to design an emergency escape device from the top ... To avoid engine failure, your friend suggests a gravitational powered elevator.

Explanation:

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To help a child who's unhappy because she wants a toy, you can make all of these statements, except.
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A would be the best answer to this question

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Read 2 more answers
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