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8090 [49]
3 years ago
8

Heike Onnes noticed that pure, solid _____ could be cooled to 4.2 K and have no resistance.

Physics
1 answer:
Marrrta [24]3 years ago
6 0

Answer: Mercury

Explanation:

Did it on edg

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NaCl <br> non metal or metal
forsale [732]

Answer:

NaCl is neither a salt nor a base.

Explanation:

It is a salt

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3 years ago
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The "Garbage Project" at the University of Arizona reports that the amount of paper discarded by households per week is normally
Lorico [155]

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54%

Explanation:

We are given that

S.D=4.2 lb

Mean=\mu=9.4 lb

We have to find the percentage of household throw out at least 9 lb of paper  a week.

Normal distribution formula :

P(X\geq a)=P(z\geq \frac{a-\mu}{\sigma})

We have a=9

P(X\geq 9)=P(z\geq \frac{9-9.4}{4.2})=P(z\geq -0.1)

P(X\geq 9)=1-P(z

P(X\geq 9)=1-0.4602=0.5398\times 100=54%

Hence, the  percentage of household throw out at least of paper a week=54%

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3 years ago
it takes a school bus full of kids longer to stop than it does a small car with a single passenger. which law is this an example
exis [7]

Newton´s second law of motion

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4 years ago
1. Why should you use scientific notation when writing big numbers?
Fynjy0 [20]

Answer:

It helps the answer look clean. It also makes the work easier to work with.

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Instead of writing a lot of zeros, all you have to do is add exponents to the number to show how much the decimal moved.

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Momentum is a measure of ____.
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Momentum is a measure of A.how hard it is to stop an object.

<span>♡♡Hope I helped!!! :)♡♡
</span>
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