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It is flexible. Water flow can be adjusted and even conserved according to the need for power. It is safe! Compared with the use of fossil fuels and nuclear energy, hydropower is a much safer system..
Answer:
See explanation
Explanation:
1) There are two main types of waves;
Mechanical waves and electromagnetic waves.
Mechanical waves usually require a medium for propagation, e.g sound, waves on a spiral spring, etc
Electromagnetic waves do not require a medium for propagation e.g microwaves, x-rays etc
2) The phenomenon is known as refraction. Refraction occurs at the boundary between two media because of the change in the speed of a wave as it moves from one medium to another.
Answer:
Diferencia de energía de las dos fuentes = 800 watts
Explanation:
Cantidad de energía recibida en el mar = 1000
Cantidad de energía solar recibida en el mar = 200
Diferencia de energía de las dos fuentes = 1000 -200 = 800 watts
Answer:
12.0 V
Explanation:
Data :
Potential difference due to a single charge (+Q), E = 3.0 V
The Electric potential for the system of charges is given as:
![E=\frac{1}{4\pi \epsilon_o}[\Sigma\frac{Q}{r}]](https://tex.z-dn.net/?f=E%3D%5Cfrac%7B1%7D%7B4%5Cpi%20%5Cepsilon_o%7D%5B%5CSigma%5Cfrac%7BQ%7D%7Br%7D%5D)
for single charge, E = 3.0 V = ![\frac{1}{4\pi \epsilon_o}[\frac{Q}{r}]](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%5Cpi%20%5Cepsilon_o%7D%5B%5Cfrac%7BQ%7D%7Br%7D%5D)
->eq(1)
And for 4 charges:
![E=\frac{1}{4\pi \epsilon_o}[4\frac{Q}{r}]](https://tex.z-dn.net/?f=E%3D%5Cfrac%7B1%7D%7B4%5Cpi%20%5Cepsilon_o%7D%5B4%5Cfrac%7BQ%7D%7Br%7D%5D)
-eq(2)
from eq(1) and (2) we have
E = 4 × 3.0 V = 12 V
