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Fittoniya [83]
3 years ago
11

What are the correct answers to these questions?

Chemistry
1 answer:
Anni [7]3 years ago
7 0
The answer to both is D. Here's why:
For the first, whenever motion changes in a magnetic field, it causes electrons to move. Electricity, which is needed to power a lightbulb, is just a term for movement of these electrons. Electrons aren't created, they're always there in the wire. It's just that the permanent magnet gets them to move, which produces electricity.
For the second, it is very similar to the first. A magnet won't cause any electric current at rest, it always requires motion in order to produce an electric current. If you keep both of those in mind, it should help in the future. Hope this helps!
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Calculate the amount of formula units in 2.10 moles of MgCl₂
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Ladybugs eat aphids on plants. Ajoy counts the number of ladybugs in one square meter of his garden.
kirza4 [7]

To estimate the number of ladybugs in the entire garden, Ajoy needs the dimension of the garden.

<h3>What is a dimension?</h3>

Dimensions in mathematics are the measure of the size or distance of an object or region or space in one direction.

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brainly.com/question/13314350

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4 0
2 years ago
How many atoms are in 187 g of Calcium?
N76 [4]
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4 0
3 years ago
What percentage of the earth is water?
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Answer:

approximately 71%

4 0
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Read 2 more answers
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