We start with procedure 1: a magnet of length L is dropped so the front end is a

Question

We start with procedure 1: a magnet of length L is dropped so the front end is at height H from the coil, and you get a graph with two peaks. Each question changes the procedure, and we wish to compare the new graph to this one.

1)First, a second identical magnet is placed so the north pole of the first is next to the south pole of the other. If the pair of magnets is dropped from height H, how will the graph compare to the original graph?
a- both peaks will be the same as before
b- peak 1 will be slightly less than before, peak 2 will be zero
c- peak 1 will be nearly zero, peak 2 will be slightly less than before
d- both peaks will be slightly less than before
e- peak 1 will be nearly zero, peak 2 will be more than before
f- peak 1 will be slightly less than before, peak 2 will be the same as before
g- both peaks will be nearly zero
h- peak 1 will be slightly less than before, peak 2 will be more than before
i- peak 1 will be the same as before, peak 2 will be slightly less than before
j- both peaks will be more than before
k- peak 1 will be the same as before, peak 2 will be more than before
L- peak 1 will be nearly zero, peak 2 will be the same as before
M- peak 1 will be the same as before, peak 2 will be the same as before

2) Next, the two identical magnets are placed so the north poles face in the same direction. If the pair of magnets is dropped from height H, how will the graph compare to the original graph?
a- peak 1 will be the same as before, peak 2 will be more than before
B- peak 1 will be nearly zero, peak 2 will be more than before
C- peak 1 will be the same as before, peak 2 will be the same as before
D- both peaks will be more than before
E- peak 1 will be slightly less than before, peak 2 will be zero
F- peak 1 will be slightly less than before, peak 2 will be more than before
G- peak 1 will be the same as before, peak 2 will be slightly less than before
H- peak 1 will be nearly zero, peak 2 will be slightly less than before
I- peak 1 will be slightly less than before, peak 2 will be the same as before
J- both peaks will be nearly zero
K- both peaks will be the same as before
L- peak 1 will be nearly zero, peak 2 will be the same as before
M- both peaks will be slightly less than before

3) Now, the same magnet is held fixed and the coil is dropped from height H, Assume the coil falls so the magnet passes through the center. How will the graph compare to the original graph?
A- peak 1 will be the same as before, peak 2 will be the same as before
B- both peaks will be slightly less than before
C- peak 1 will be slightly less than before, peak 2 will be the same as before
D- peak 1 will be nearly zero, peak 2 will be more than before
E- both peaks will be nearly zero
F- peak 1 will be nearly zero, peak 2 will be the same as before
G- peak 1 will be the same as before, peak 2 will be more than before
H- both peaks will be the same as before
I- peak 1 will be nearly zero, peak 2 will be slightly less than before
J- peak 1 will be slightly less than before, peak 2 will be more than before
K- peak 1 will be slightly less than before, peak 2 will be zero
L- both peaks will be more than before
M- peak 1 will be the same as before, peak 2 will be slightly less than before

4) Next: the original experiment is repeated on the Moon, where g, the acceleration due to gravity, is about one-sixth of g on Earth. If the magnet is dropped from height H, how will the graph compare to the original graph?
A- both peaks will be nearly zero
B- both peaks will be more than before
C- peak 1 will be nearly zero, peak 2 will be more than before
D- peak 1 will be slightly less than before, peak 2 will be zero
E- both peaks will be slightly less than before
F- peak 1 will be slightly less than before, peak 2 will be more than before
G- peak 1 will be the same as before, peak 2 will be slightly less than before
H- peak 1 will be nearly zero, peak 2 will be the same as before
I- peak 1 will be slightly less than before, peak 2 will be the same as before
J- peak 1 will be nearly zero, peak 2 will be slightly less than before
K- peak 1 will be the same as before, peak 2 will be more than before
L- both peaks will be the same as before
M- peak 1 will be the same as before, peak 2 will be the same as before

5) Finally: if you increase the height H, what will happen to the graph?
A- peak 1 will be nearly zero, peak 2 will be slightly less than before
B- both peaks will be nearly zero
C- Peak 1 will be nearly zero, peak 2 will be more than before
D- both peaks will be slightly less than before
E- both peaks will be more than before
F- peak 1 will be nearly zero, peak 2 will be the same as before
G- peak 1 will be slightly less than before, peak 2 will be zero
H- peak 1 will be the same as before, peak 2 will be more than before
I- peak 1 will be the same as before, peak 2 will be slightly less than before
J- peak 1 will be the same as before, peak 2 will be the same as before
K- peak 1 will be slightly less than before, peak 2 will be more than before
L- peak 1 will be slightly less than before, peak 2 will be the same as before
M- both peaks will be the same as before

Explanation / Answer

   both peaks will be more than before
   Peaks indicate the induced EMF which depends upon rate of change of magnetic field, since two magnets are similarly aligned, the magnetic field will be stronger and the peaks will the more than before.

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