distance d = 5 km = 5 x 1000 m = 5000 m
time taken = 25 minute = 25 x 60 sec = 1500 sec
average velocity V = d/t
V = 5000/1500
V = 3.33 m/s towards east
Answer:
no deflection
Explanation:
current is flowing from west to east. As the magnetic field of a long wire carrying current is circular, its direction will be north below the wire and south above the wire (according to the right hand rule). So, when the compass is placed underneath the wire, it will still point towards the north direction.
Yes, the Ozone Layer does affect our heath.
Answer: See explanation for example
Explanation:
Mutations are changes in DNA. They change the way a stretch of gene is produced or reacts. Therefore, if mutations occur rapidly, it could introduce variations of actually anything!
Answer:
Explanation:
Magnetic moment of one turn of current carrying coil = current x area of coil
= 4.4 x π x 1.05² x 10⁻⁴ Am²
magnetic moment of 340 turns
M = 340 x 4.4 x π x 1.05² x 10⁻⁴
= .5179 Am²
This will act as short bar magnet . Magnetic field due to a short bar magnet at a point on its axis is given by following formula
B = 2 k M / d³ , k is a constant
Putting the given value of magnetic field we can find d.
7.4 x 10⁻⁶ = 2 x 4π x 10⁻⁷ x .5179 / d³
d³ = 2 x 4π x 10⁻⁷ x .5179 / 7.4 x 10⁻⁶
= .1758 m
d = .56 m
= 56 cm