350kg because to get Newton’s it’s mass x Gravity, earths gravity is x10 so 3500 divided by 10 is 350
Explanation:
It is given that,
Area of nickel wire, ![A=7.4\ cm^2=7.4\times 10^{-4}\ m^2](https://tex.z-dn.net/?f=A%3D7.4%5C%20cm%5E2%3D7.4%5Ctimes%2010%5E%7B-4%7D%5C%20m%5E2)
Resistance of the wire, R = 2.4 ohms
Initial value of magnetic field, ![B_1=0.5\ T](https://tex.z-dn.net/?f=B_1%3D0.5%5C%20T)
Final magnetic field, ![B_2=3\ T](https://tex.z-dn.net/?f=B_2%3D3%5C%20T)
Time, t = 1.12 s
Let I is the induced current in the loop of wire over this time. Te emf induced in the wire is given by Faraday's law as :
![\epsilon=-\dfrac{d\phi}{dt}](https://tex.z-dn.net/?f=%5Cepsilon%3D-%5Cdfrac%7Bd%5Cphi%7D%7Bdt%7D)
![\epsilon=-\dfrac{d(BA)}{dt}](https://tex.z-dn.net/?f=%5Cepsilon%3D-%5Cdfrac%7Bd%28BA%29%7D%7Bdt%7D)
![\epsilon=-A\dfrac{d(B)}{dt}](https://tex.z-dn.net/?f=%5Cepsilon%3D-A%5Cdfrac%7Bd%28B%29%7D%7Bdt%7D)
![\epsilon=-A\dfrac{B_2-B_1}{t}](https://tex.z-dn.net/?f=%5Cepsilon%3D-A%5Cdfrac%7BB_2-B_1%7D%7Bt%7D)
![\epsilon=-7.4\times 10^{-4}\times \dfrac{3-0.5}{1.12}](https://tex.z-dn.net/?f=%5Cepsilon%3D-7.4%5Ctimes%2010%5E%7B-4%7D%5Ctimes%20%5Cdfrac%7B3-0.5%7D%7B1.12%7D)
![\epsilon=1.65\times 10^{-3}\ V](https://tex.z-dn.net/?f=%5Cepsilon%3D1.65%5Ctimes%2010%5E%7B-3%7D%5C%20V)
Induced current in the loop of wire is given by :
![I=\dfrac{\epsilon}{R}](https://tex.z-dn.net/?f=I%3D%5Cdfrac%7B%5Cepsilon%7D%7BR%7D)
![I=\dfrac{1.65\times 10^{-3}}{2.4}](https://tex.z-dn.net/?f=I%3D%5Cdfrac%7B1.65%5Ctimes%2010%5E%7B-3%7D%7D%7B2.4%7D)
![I=6.87\times 10^{-4}\ A](https://tex.z-dn.net/?f=I%3D6.87%5Ctimes%2010%5E%7B-4%7D%5C%20A)
So, the induced current in the loop of wire over this time is
. Hence, this is the required solution.
Answer:
has free electrons
Explanation:
A conductor has free electrons while an insulator does not. Free electrons are electrons which are not bounded tightly to their parent atoms, and are free to move given the right conditions (ie. a strong EM field).
Answer:
be mature, it's the only way to be called independent, I will help my parents with doing chores, you will meet new friends
Explanation:
it's just my own understanding
Answer:
The correct option is A = adiant negy.