Answer:
a) 
b) west end of the bar is positive.
Explanation:
Given:
- emf induced in the bar,
- length of the bar,
- velocity of the bar at the given instant,
(a)
The magnitude of the horizontal component of the Earth's magnetic field(B):
We know:
(b)
Using Fleming's left hand rule we determine that the current is flowing towards east end of the bar i.e. west end of the bar is positive.
Answer:
no
Explanation
non-metal and metal are two different things
We can see only 180 degrees ahead.. but any view which is behind that is impossible to see because of that....
The resonance can be extended to wave phenomena.
Answer:
a = 616850.28 m/s²
Explanation:
Given that,
The radius of the neutron star, r = 10 Km
= 10,000 m
The time period of the neutron star, T = 0.8 s
The centripetal acceleration is given by the formula,
a = v²/r
The linear velocity is given by the relation,
v = rω
The time taken to complete one complete rotation is given by the relation
T = 2π /ω
Where,
ω = 2π / T
Substituting v and ω into the equation for centripetal acceleration. It becomes
a = 4π²r/T²
Substituting the given values in the above equation
a = 4π² x 10000 / 0.8²
= 616850.28 m/s²
Hence, the centripetal acceleration of this person is, a = 616850.28 m/s²
