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2 answers:
Answer:
B. Magnetic field
Explanation:
When metal filings are close to a magnetic field, they tend to align with it.
In other words, the show the direction of the magnetic field at each point.
even by guessing, there is no electric field around steady magnets, nor the gravitational attraction has nothing to dp with that. :)
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Answer:
21600
1296000
Explanation:
Full cycle consists of
1 hour = 3600 seconds
1 minute = 60 seconds
Converting to arcminutes
The arcminutes in a full cycle is 21600
Converting to arcseconds
The arseconds in full cycle is 1296000