extra flaschards dont know where to put Flashcards
1
Q
what is a system
A
a group of objects that interact
2
Q
from a graph how can you prove a set of results are directly proportional to eachother
A
- if the line is straight and passes through the origin
3
Q
why does the movement of a bar magnet induce a potential difference across a coil
A
because the magnetic field around the coil changes
4
Q
why does an induced potential difference across the coil alternate
A
because the magnet changes direction
5
Q
how can the design of a seisometer be changed to make it more sensitive to small vibrations
A
- use a stronger magnetic field
- use more turn on coil
