Answer:
Carbon - 14 Isotope
Explanation:
Carbon - 14 is an unstable and weak radioactive carbon isotope that is used to determine the age of an organic matter (i.e Carbon Dating).
Ns
When the force on an object is multiplied by the time it is acting, the Impulse of a force is generated. This is a vector unit and is equal to the change in momentum with its unit as kilogram meter per second (kgms) or Newton Second (Ns)
Answer:25.23 V
Explanation:
Given
no of turns ![N=60 turns](https://tex.z-dn.net/?f=N%3D60%20turns)
Magnetic Field ![B=1.2 T](https://tex.z-dn.net/?f=B%3D1.2%20T)
Area of rectangular coil ![A=23\times 31=713 cm^2\approx 0.0713m^2](https://tex.z-dn.net/?f=A%3D23%5Ctimes%2031%3D713%20cm%5E2%5Capprox%200.0713m%5E2)
Change in magnetic Flux is given by
![\Delta \phi =BA\cos \theta](https://tex.z-dn.net/?f=%5CDelta%20%5Cphi%20%3DBA%5Ccos%20%5Ctheta%20)
![\Delta \phi =1.2\times 0.0736\cos 0=0.08832 V-s](https://tex.z-dn.net/?f=%5CDelta%20%5Cphi%20%3D1.2%5Ctimes%200.0736%5Ccos%200%3D0.08832%20V-s)
(b)Emf induced change in Flux with respect to time and it can be given by
![E=-N\frac{\mathrm{d} \phi }{\mathrm{d} t}](https://tex.z-dn.net/?f=E%3D-N%5Cfrac%7B%5Cmathrm%7Bd%7D%20%5Cphi%20%7D%7B%5Cmathrm%7Bd%7D%20t%7D)
![E=-60\times \frac{0.08832}{0.21}](https://tex.z-dn.net/?f=E%3D-60%5Ctimes%20%5Cfrac%7B0.08832%7D%7B0.21%7D)
![E=-25.23 V](https://tex.z-dn.net/?f=E%3D-25.23%20V)
The magnitude of emf induced is ![25.23 V](https://tex.z-dn.net/?f=25.23%20V)