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vlada-n [284]
3 years ago
15

A student conducted a scientific investigation on the magnetic properties of iron. She used a magnet to try to pick up iron nail

s. After making several observations, which question can she answer? Which part of a magnet is strongest at attracting iron? How fast does iron lose its magnetism? What is the importance of studying the magnetic field of a magnet? How does the color of iron change with exposure to air?
Biology
1 answer:
Harman [31]3 years ago
6 0

Answer:

A descriptive investigation cannot show a cause-and-effect relationship between bacteria growth and possible factors affecting growth.

Explanation:

I did  the quiz and got this one right -3-   <3

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A. All matter in the universe has expanded outward from a single point.

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Phase 1: Measuring diameter of a circle
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Measuring the diameter of a circle using a ruler requires the knowledge of what the diameter of a circle is.

The diameter of a circle is simply the radius of the circle multiplied by 2. In other words, one can simply measure the radius of a circle and multiply it by 2 in order to get the diameter of the circle.

The radius of a circle in itself is the distance between the center of the circle and to any endpoint of the circle.

Hence, in order to measure the diameter of the circles in question, just measure the radius of each circle using a ruler, multiply it by 2 and record your measurements.

If you had used the cm reading on the ruler to record your measurements, each diameter in cm can be converted to mm as follows:

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More on measurement and conversion can be found here: brainly.com/question/13710038

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