Answer:
The Universe became transparent to the light left over from the Big Bang when it was roughly 380,000 years old
Explanation:
Well if the rock doesn't move, then there is no amount of work done. There is no work done on an object if a force is applied to the object but it DOES NOT change its position, in this case is the rock.
Answer:
<h3>Because one Coulomb of charge is an abnormally large quantity of charge, the units of microCoulombs (µC) or nanoCoulombs (nC) are more commonly used as the unit of measurement of charge. To illustrate the magnitude of 1 Coulomb, an object would need an excess of 6.25 x 1018 electrons to have a total charge of -1 C.</h3>
Explanation:
<h3><em><u>mark as brainliast</u></em></h3><h3><em><u>indian </u></em><em><u>genius </u></em><em><u>s</u></em><em><u>a</u></em><em><u>r</u></em><em><u>thak</u></em></h3>
Answer:
a)
, b) ![v \approx 7745.967\,\frac{m}{s}](https://tex.z-dn.net/?f=v%20%5Capprox%207745.967%5C%2C%5Cfrac%7Bm%7D%7Bs%7D)
Explanation:
a) The potential energy is:
![U_{e} = Q \cdot \Delta V](https://tex.z-dn.net/?f=U_%7Be%7D%20%3D%20Q%20%5Ccdot%20%5CDelta%20V)
![U_{e} = (30\,C)\cdot (1.0\times 10^{9}\,V)](https://tex.z-dn.net/?f=U_%7Be%7D%20%3D%20%2830%5C%2CC%29%5Ccdot%20%281.0%5Ctimes%2010%5E%7B9%7D%5C%2CV%29)
![U_{e} = 3 \times 10^{10}\,J](https://tex.z-dn.net/?f=U_%7Be%7D%20%3D%203%20%5Ctimes%2010%5E%7B10%7D%5C%2CJ)
b) Maximum final speed:
![U_{e} = \frac{1}{2}\cdot m \cdot v^{2}\\v = \sqrt{\frac{2\cdot U_{e}}{m} }](https://tex.z-dn.net/?f=U_%7Be%7D%20%3D%20%5Cfrac%7B1%7D%7B2%7D%5Ccdot%20m%20%5Ccdot%20v%5E%7B2%7D%5C%5Cv%20%3D%20%5Csqrt%7B%5Cfrac%7B2%5Ccdot%20U_%7Be%7D%7D%7Bm%7D%20%7D)
The final speed is:
![v=\sqrt{\frac{2\cdot (3 \times 10^{10}\,J)}{1000\,kg} }](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B%5Cfrac%7B2%5Ccdot%20%283%20%5Ctimes%2010%5E%7B10%7D%5C%2CJ%29%7D%7B1000%5C%2Ckg%7D%20%7D)
![v \approx 7745.967\,\frac{m}{s}](https://tex.z-dn.net/?f=v%20%5Capprox%207745.967%5C%2C%5Cfrac%7Bm%7D%7Bs%7D)