Answer:
95 feet
Explanation:
We have given that 4 boards are of
so total number of feet of 4 boards = ![4\times \frac{117}{8}=58.5feet](https://tex.z-dn.net/?f=4%5Ctimes%20%5Cfrac%7B117%7D%7B8%7D%3D58.5feet)
Two board are of
so total number of feet of two board ![=2\times \frac{47}{4}=23.5feet](https://tex.z-dn.net/?f=%3D2%5Ctimes%20%5Cfrac%7B47%7D%7B4%7D%3D23.5feet)
And two boards are of
so total feet ![2\times \frac{13}{2}feet=13 feet](https://tex.z-dn.net/?f=2%5Ctimes%20%5Cfrac%7B13%7D%7B2%7Dfeet%3D13%20feet)
So total height of all boards = 58.5+23.5+13=95 feet
Answer: 0.4 V
Explanation:
Given
The area of the loop is ![A=0.8\ m^2](https://tex.z-dn.net/?f=A%3D0.8%5C%20m%5E2)
The magnetic field is changing at the rate of ![\dot{B}=-0.5\ T/s](https://tex.z-dn.net/?f=%5Cdot%7BB%7D%3D-0.5%5C%20T%2Fs)
Induced EMF is given by
![E=-\dfrac{d\phi }{dt}\\\\E=-\dfrac{d(B\cdot A)}{dt}\\\\E=-A\dfrac{dB}{dt}\\E=-0.8\times (-0.5)\\E=0.4\ V](https://tex.z-dn.net/?f=E%3D-%5Cdfrac%7Bd%5Cphi%20%7D%7Bdt%7D%5C%5C%5C%5CE%3D-%5Cdfrac%7Bd%28B%5Ccdot%20A%29%7D%7Bdt%7D%5C%5C%5C%5CE%3D-A%5Cdfrac%7BdB%7D%7Bdt%7D%5C%5CE%3D-0.8%5Ctimes%20%28-0.5%29%5C%5CE%3D0.4%5C%20V)
The magnitude of induced emf is 0.4 V
Answer:
Demonstrative evidence
Explanation:
is evidence that is used to help recreate or illustrate a crime and testimony is the evidence given by witnesses during a trial. Also Documentary evidence is any type of written or recorded evidence, such as a recording of a telephone conversation or a video recording of a crime.
I hope i was able to help (: