Answer:
Le pH de l’ammoniac est de 11.6
Explanation:
Answer:
B. a super-giant in spectral class K
Explanation:
The classification of stars are done on various characteristics like surface temperature, luminosity, spectral class etc. HR diagram is a plot which shows the relation between these characteristics of stars. One can also predict the life cycle of stars. When you plot the stars basis these characteristics on HR Diagram you can easily see that the stars with temperature lower than 4000K and brightness several thousand of that of the Sun will be a supergiant star.
Answer:
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies
Answer:
The values are:
![I_{o} =0.06+j0.045A](https://tex.z-dn.net/?f=I_%7Bo%7D%20%3D0.06%2Bj0.045A)
![I_{1} =0.3+j0.225A](https://tex.z-dn.net/?f=I_%7B1%7D%20%3D0.3%2Bj0.225A)
![V_{o} =12+j9V](https://tex.z-dn.net/?f=V_%7Bo%7D%20%3D12%2Bj9V)
Explanation:
the attached figure shows the diagram. The equation is the following:
(eq. 1)
Voltage across the 40 Ω is equal:
(eq. 2)
Applying the Kirchhoff´s voltage law:
(eq. 3)
Equation 1 and 2:
(eq. 4)
Substituting in eq. 3
![75=I_{o} (600+j150)+5I_{o} (40-j150)\\75=I_{o} (800-j600)\\I_{o} =\frac{75}{800-j600} =0.06+j0.045A](https://tex.z-dn.net/?f=75%3DI_%7Bo%7D%20%28600%2Bj150%29%2B5I_%7Bo%7D%20%2840-j150%29%5C%5C75%3DI_%7Bo%7D%20%28800-j600%29%5C%5CI_%7Bo%7D%20%3D%5Cfrac%7B75%7D%7B800-j600%7D%20%3D0.06%2Bj0.045A)
Substituting in eq. 4
![I_{1} =0.3+j0.225A](https://tex.z-dn.net/?f=I_%7B1%7D%20%3D0.3%2Bj0.225A)
Substituting in eq. 2:
![V_{o} =12+j9V](https://tex.z-dn.net/?f=V_%7Bo%7D%20%3D12%2Bj9V)