We can see the axon as a current-carrying wire. The magnetic field produced by a current-carrying wire is given by
where
is the vacuum permeability
I is the current in the wire
r is the radial distance from the wire at which the field is calculated
The current in the axon is
,
therefore the magnetic field strength at distance
from the axon is
Answer:
<em>T = 1.46 s</em>
Explanation:
The time period of pendulum can be given as:
------ (1)
Where,
L = Length of String = 52.8 cm
g = gravity = 9.81 m/s2
Substituting the values in equation (1),we get,
Notes:
- The time period equation of simple harmonic motion is written as:
------(2)
Where,
m = mass of object
k = Springs constant
The restoring force of pendulum which accelerates the mass towards equilibrium is given as:
mg Sinφ = ks
<em>s = rφ</em>
In this case, r = L
Therefore, s = Lφ
Now,
mg Sinφ = k Lφ
k = mg Sinφ / Lφ
k = (mg/L) (Sinφ/φ)
For all small angles:
lim (φ--->0) = Sinφ/φ = 1
therefore. equation (2) implies:
In this question: φ = 33°
33° = 33 x π /180
33° = 0.575959 radians
Therefore,
Sin 0.575959 / 0.575959
0.9456
1/0.9456 = 1.057505
Sqrt (1.057505)
1.02835
Now the formula can be written as:
So, the accurate answer would be 1.50 s.
Magnetic north pole is defined as the part of Earth where magnetic field lines are originating outwards
So here as per the experimental analysis we know that earth is surrounded by magnetic field lines.
These magnetic field lines are due to several causes but it almost shows same trend as we got it from a bar magnet
If we suspend a bar magnet freely near the surface of Earth then that bar magnet will get affected by the magnetic field lines of Earth
So here North pole of suspended magnet always get attracted towards the south pole of the earth magnetic pole
This experimentally founds that Geographic north pole of Earth is always shown by north pole freely suspended magnet on earth which means Magnetic south pole of Earth is at Geographic north pole
So here <em>opposite to that we must have North pole of Earth magnet which means that Geographic south pole is always Magnetic north pole of earth</em>
Acceleration =velocity /time
=35/5
7