Answer:
When you read the entire preamble, you can see that it is “We the People” who are giving the government their powers. This is very important because without the people lending that power, the United States Constitution would not have been able to become the guideline for the Republican government we have today
Explanation:
The concave mirror is a spherical-shaped mirror that has an inner curved surface. Hence, option (4) is correct.
What is a concave mirror?
The concave mirrors are spherical-shaped mirrors that are painted on the outward surface. It is also known as the converging mirror, having the recessed inner reflecting surface.
- The concave mirrors are generally used for the purpose to focus the light. For that, they might have a reflecting surface, curved inwards, and the reflection of light is limited to the single focal point.
- The reflecting surface of the concave mirror has its vertex or midpoint lying farther away from the objects than the edges.
Thus, we can conclude that the surface of the concave mirror is curved inward. Hence, option (4) is correct.
Learn more about the concave mirror here:
brainly.com/question/13300307
Answer:
the average induced emf in the second winding is ![7.9168*10^{-5}V](https://tex.z-dn.net/?f=7.9168%2A10%5E%7B-5%7DV)
Explanation:
The magnetic field inside the first solenoid is given by,
![B= \mu_0NI](https://tex.z-dn.net/?f=B%3D%20%5Cmu_0NI)
Where
is the permeability of the free space
N is the number of turns of solenoid per unit length
I is the current in the solenoid
A is the cross-sectional area of the wire
Replacing we have,
![B= (4*\pi*10^{-7})(90/cm (\frac{100cm}{1m}))(0.350A)](https://tex.z-dn.net/?f=B%3D%20%284%2A%5Cpi%2A10%5E%7B-7%7D%29%2890%2Fcm%20%28%5Cfrac%7B100cm%7D%7B1m%7D%29%29%280.350A%29)
![B = 3.9584*10^{-3}T](https://tex.z-dn.net/?f=B%20%3D%203.9584%2A10%5E%7B-3%7DT)
Thus average emf induced in the second windigs is,
![\epsilon{avg}=\N\frac{dB}{dt}](https://tex.z-dn.net/?f=%5Cepsilon%7Bavg%7D%3D%5CN%5Cfrac%7BdB%7D%7Bdt%7D)
![\epsilon_{avg}=\frac{d}{dt}(AB)](https://tex.z-dn.net/?f=%5Cepsilon_%7Bavg%7D%3D%5Cfrac%7Bd%7D%7Bdt%7D%28AB%29)
![\epsilon_{avg}=A\frac{dB}{dt}](https://tex.z-dn.net/?f=%5Cepsilon_%7Bavg%7D%3DA%5Cfrac%7BdB%7D%7Bdt%7D)
![\epsilon_{avg}= A\frac{dB}{dt}](https://tex.z-dn.net/?f=%5Cepsilon_%7Bavg%7D%3D%20A%5Cfrac%7BdB%7D%7Bdt%7D)
![\epsilon_{avg}=(8*10^{-4})\frac{3.9584*10^{-3}}{0.04}](https://tex.z-dn.net/?f=%5Cepsilon_%7Bavg%7D%3D%288%2A10%5E%7B-4%7D%29%5Cfrac%7B3.9584%2A10%5E%7B-3%7D%7D%7B0.04%7D)
![\epsilon_{avg} = 7.9168*10^{-5}V](https://tex.z-dn.net/?f=%5Cepsilon_%7Bavg%7D%20%3D%207.9168%2A10%5E%7B-5%7DV)
Therefore the average induced emf in the second winding is ![7.9168*10^{-5}V](https://tex.z-dn.net/?f=7.9168%2A10%5E%7B-5%7DV)
Explanation:
life is about the good and bad experiences
Answer:
<h2>0.94 m/s²</h2>
Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
![a = \frac{f}{m} \\](https://tex.z-dn.net/?f=a%20%3D%20%20%5Cfrac%7Bf%7D%7Bm%7D%20%20%5C%5C%20)
m is the mass
f is the force
From the question we have
![a = \frac{150}{160} = \frac{15}{16} \\ = 0.9375](https://tex.z-dn.net/?f=a%20%3D%20%20%5Cfrac%7B150%7D%7B160%7D%20%20%3D%20%20%5Cfrac%7B15%7D%7B16%7D%20%20%5C%5C%20%20%3D%200.9375)
We have the final answer as
<h3>0.94 m/s²</h3>
Hope this helps you