4 years ago

Which of the following best defines insulator?

Physics

1 answer:

aliya0001 [1]4 years ago

6 0

Answer:

A substance with low ability or no ability to conduct energy.

Such as Rubber,Silicone,Plastic

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Among the largest passenger ships currently in use, the Norway has been in service the longest. The Norway is more than 300 m lo

LenaWriter [7]

Answer:

$6.33\times 10^8\ kg\cdot m/s$

Explanation:

Mass of the ship (m) = 6.9 × 10⁷ kg

Speed of the ship (v) = 33 km/h

First, let us convert the speed from km/h to m/s using the conversion factor.

We know that, 1 km/h = 5/18 m/s

So, 33 km/h = $33\times \frac{5}{18}=9.17\ m/s$

Now, we know, the momentum of an object only depends on its mass and speed. Momentum is independent of the length of the object.

So, here, length of the ship doesn't play any role in the determination of the momentum.

Magnitude of momentum of the ship = Mass × Speed

= $(6.9\times 10^7\ kg)(9.17\ m/s)$

= $6.33\times 10^8\ kg\cdot m/s$

Therefore, the magnitude of ship's momentum is $6.33\times 10^8\ kg\cdot m/s$ .

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4 years ago

A spy in a speed boat is being chased down a river by government officials in a faster craft. Just as officials boat pulls up ne

KonstantinChe [14]

Answer:

They are 7.4m apart.

Explanation:

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3 years ago

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What is the energy of an electromagnetic wave that has a frequency of 5.0 x 10⁵ Hz?

Valentin [98]

Answer: 3.3 x 10^-28 J

Explanation: just answered on a quiz!! :)

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3 years ago

Can someone please tell me if it’s A. Or D. Please

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D. similar types of rocks and fossils

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If you cut a metal cube into four pieces, do the new pieces have a different mass than the original cube? Do the new pieces have

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Each piece will have 1/4 of the mass of the original big cube, but its density will be the same.
Density is a property of a substance, no matter how much or how little of it you have.
A speck of it on the tip of your pinky and a supertankerful of the same substance have the same density.

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3 years ago