Drag from her armas would slow her down if she was spinning at a fast speed
Two examples of where you can find permanent magnets are
1.compass
2.speakers
Answer:
Friction force is 0.1375 N
Solution:
As per the question:
Radius of the metal disc, R = 4.0 cm = 0.04 m
Magnetic field, B = 1.25 T
Current, I = 5.5 A
Force on a current carrying conductor in a magnetic field is given by considering it on a differential element:
Integrating the above eqn:
(1)
Now the torque is given by:
(2)
From eqn (1) and (2):
Thus the Frictional force is given by:
The answer is "a phase is a wave and density is what gives the wave its volume giving it its wavelength." Phases have different meanings for example phases of a moon and such but in this case phases are parts of mechanical waves that are closely related to each other meaning coming from the same object. So, with density is volume and because of volume it gives the wave its wavelength which is a phase. (when two waves are closely related)
Hope this helps!