Answer:
each cement block supports a 2n force
Explanation:
Answer:
a loud explosive noise caused by the shock wave from an aircraft traveling faster than the speed of sound.
Explanation:
Answer:
The potential for r > rb is equal to zero.
Explanation:
For r > rb, the potential is:
![V=\frac{Kq}{r}](https://tex.z-dn.net/?f=V%3D%5Cfrac%7BKq%7D%7Br%7D)
Then, the net potential is:
![V_{(r)} =\frac{K(+\epsilon )}{r} +\frac{K(-\epsilon )}{r}](https://tex.z-dn.net/?f=V_%7B%28r%29%7D%20%3D%5Cfrac%7BK%28%2B%5Cepsilon%20%29%7D%7Br%7D%20%2B%5Cfrac%7BK%28-%5Cepsilon%20%29%7D%7Br%7D)
![K=\frac{1}{4\pi \epsilon _{o} }](https://tex.z-dn.net/?f=K%3D%5Cfrac%7B1%7D%7B4%5Cpi%20%5Cepsilon%20_%7Bo%7D%20%20%7D)
![V_{(r)} =\frac{K(+\epsilon )}{r} -\frac{K(\epsilon )}{r}\\V_{(r)}=0](https://tex.z-dn.net/?f=V_%7B%28r%29%7D%20%3D%5Cfrac%7BK%28%2B%5Cepsilon%20%29%7D%7Br%7D%20-%5Cfrac%7BK%28%5Cepsilon%20%29%7D%7Br%7D%5C%5CV_%7B%28r%29%7D%3D0)
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)
Answer:
so angular velocity is 7.13128 sec−1
Explanation:
velocity v = 2.2 m/s
displacement s = 220 mm = 0.220 m
distance d = 510 mm = 0.510 m
to find out
angular velocity
solution
we know that
angular velocity will be velocity ( v) / (displacement² + distance²) .....1
now put all these value in equation 1 and we get angular velocity i.e.
angular velocity = velocity ( v) / (displacement² + distance²)
angular velocity = 2.2 / (0.22² + 0.51²)
angular velocity = 2.2 / 0.3085
angular velocity = 7.13128
so angular velocity is 7.13128 sec−1