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4 years ago

12

How is the carbon left behind by dinosaurs millions of years ago stored today

1 answer:

forsale [732]4 years ago

5 0

It's in the form of the hundreds of "hydrocarbon" compounds
in every ounce of oil out of the ground.

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What is a string theory ?

Serggg [28]

It is a unified theory than can describe whole world.

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3 years ago

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What do repeated trails in an experiment allow scientists to do?

fredd [130]

Answer:

Explanation:

When we do multiple trials of the same experiment, we can make sure that our results are consistent and not altered by random events. Multiple trials can be done at one time. If we were testing a new fertilizer, we could test it on lots of individual plants at the same time.

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3 years ago

Which of the following is a unit of volume in the English system of measurement? (4 points)

Levart [38]

The answer is gallons.

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3 years ago

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Round to three significant figures.<br> 0.0785584 rounds to

Elan Coil [88]

Answer:

0.0786

Explanation:

zero after the decimal place is not a significant figure since it comes before the real integer "7".

"5 " in ten thousandth place is rounded off to "6" because the next digit is also another "5",

so we get the three sfg 0.0786

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3 years ago

You hold a bucket in one hand. In the bucket is a 500 g rock. You swing the bucket so the rock moves in a vertical circle 2.2 m

slavikrds [6]

Answer:v=3.28 m/s

Explanation:

Given

mass of rock $m=500 gm$

diameter of circle $d=2.2 m$

radius $r=\frac{2.2}{2}=1.1 m$

At highest Point

$mg+N=\frac{mv^2}{r}$

At highest Point N=0 because mass is just balanced by centripetal Force

thus $mg=\frac{mv^2}{r}$

$v=\sqrt{gr}$

$v=\sqrt{9.8\times 1.1}$

$v=\sqrt{10.78}$

$v=3.28 m/s$

6 0

3 years ago