<p>Magnetic flux is defined as the area of the loop times the strength of the magnetic field times the angle the loop makes with the field. If there is no change in magnetic flux, there is no induced current. According to the question, the loop moved sideways through the field. This motion did not involve a change in area of the loop, nor did the strength of the magnetic field passing through the loop change. In addition, the loop remained perpendicular to the field, so the angle did not change. Thus, there was no change in magnetic flux, so no current was induced.</p>
<p>We can also consider the individual electrons in the wire. Since the entire wire was moving sideways in the same direction, each electron in the wire was moving the same direction, and hence according to the right-hand rule they all felt a force in the same direction (in this case, downwards). But for a current to exist, the electrons would need to move in different directions depending on their location in the wire - on one side they would need to move up, on the other side down, and they would have to move sideways on the top and bottom of the loop, etc. Hence, there could be no current since all the electrons felt a force in the same direction.</p>
<p>The curve is actually around -15 for an 800. It’s so generous not because the questions are difficult, but because they cover such a wide range of information that most people will see a number of questions about things they are unfamiliar with.</p>
<p>I put the same thing as you, but I was really unsure. I don’t know what CB meant by “surrounding points” - whether it was just the nearby points, or any points on the line. Because the next maximum would have been .5 m away, which isn’t necessarily within the distance designated by the phrase “surrounding points.”</p>
<p>sorry to be annoying but could anyone help me with my previous question?</p>
<p>“The questions in the beginning relating to the Spring with the weight attached, moving between points X, Y, and Z. What exactly was happening in that picture?”</p>
<p>I know I can’t change my answers, but I’m actually interested in what was going on.</p>
<p>@Choklit Rain - It was just a mass spring vertical system.
The thing that remains constant - force of gravity (mg)
the center point was where Ke is max, the other 2 are where Pe is max.
At the bottom point, the velocity changed, it then moved up</p>
<p>^umm, that definitely is not the case…think external forces</p>
<p>the law of conservation of momentum states “the total momentum of any group of objects remains the same unless outside forces act on the objects.”</p>