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2 years ago

Which materials are good insulators? Select three options. Glass paper gold plastic silver.

Physics

2 answers:

valentina_108 [34]2 years ago

8 0

Answer:

Plastic Glass and Paper

Explanation:

i just took the assignment

mixas84 [53]2 years ago

7 0

Glass, paper, and plastic are good insulators. The material that does not allow the flow of current through them is known as the insulators.

<h3>What are insulators?</h3>

An electrical insulator is a substance that prevents electric current from flowing freely. The electrons in the insulator's atoms are closely bonded and cannot travel easily.

Other materials, such as semiconductors and conductors, carry electricity more easily. The characteristic that characterizes an insulator.

Gold and silver are good conductors of electricity. While glass, paper, and plastic are good insulators.

Hence glass, paper, and plastic are good insulators.

To learn more about the insulator refer to the link;

brainly.com/question/24909989

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Explanation:

We have,

Mass of an object is 0.5 kg

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3 years ago

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The question is whether the statement is true or false.

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3 years ago

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Answer:

Minimum work = 5060 J

Explanation:

Given:

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Let 'W' be the work done by the worker in lifting the bucket.

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Change in mechanical energy is equal to the sum of change in potential energy and kinetic energy. Therefore,

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Therefore, the work done by the worker in lifting the bucket is given as:

$W=\Delta E\\\\W=mgh+\frac{1}{2}m(v^2-u^2)$

Now, plug in the values given and solve for 'W'. This gives,

$W=(20\ kg)(9.8\ m/s^2)(25\ m)+\frac{1}{2}(20\ kg)(4^2-0^2)\ m^2/s^2\\\\W=4900\ J +160\ J\\\\W=5060\ J$

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