a). Frequency = (4,000 rev/minute)·(1 minute/60 sec) = <em>66 and 2/3 rev/sec</em>
b). Period = 1 / frequency
Period = 1 / (66-2/3 rev/sec)
Period = 1/66-2/3 sec/rev
<em>Period = 0.015 sec/rev </em>
Answer:
maybe:)
Explanation:
it really just depends on the subject and grade for me, I'm good in history and writing!
<span>Magnetic field 'lines' were invented by people, to have a visualization of the
magnetic field. We draw 'lines' to show the direction of the force that a tiny
test magnet would feel if it were at any point in the field, and the direction
it would move from there.
If 'lines' crossed, then there would be a point in the field where a tiny test
magnetic would feel a force in two different directions, and it would have a
choice of which way to go from there. That doesn't happen.</span>
Answer: accuracy is how close a value is to their true value, like how close a arrow gets to the bull's eye center. precision is how repeatable a measurement is, like how close a second arrow is to the first one.
Explanation: