Current is created when charges are quickened by an electric field to move where the position of lower temperature. An electric current is a stream of electric charge. In electric circuits, this charge is regularly conveyed by moving electrons in a wire.
Answer:
![\large \boxed{42\, \mu \text{C}}$](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B42%5C%2C%20%5Cmu%20%5Ctext%7BC%7D%7D%24)
Explanation:
The formula for the force exerted between two charges is
![F=k \dfrac{ q_1q_2}{r^2}](https://tex.z-dn.net/?f=F%3Dk%20%5Cdfrac%7B%20q_1q_2%7D%7Br%5E2%7D)
where k is the Coulomb constant.
The charges are identical, so we can write the formula as
![F=k\dfrac{q^{2}}{r^2}](https://tex.z-dn.net/?f=F%3Dk%5Cdfrac%7Bq%5E%7B2%7D%7D%7Br%5E2%7D)
![\begin{array}{rcl}\text{4.0 N}& = & 8.988 \times 10^{9}\text{ N$\cdot$m$^{2}$C$^{-2}$} \times \dfrac{q^{2}}{\text{(2.0 m)}^{2}}\\\\4.0 & = & 2.25 \times 10^{9}\text{ C$^{-2}$} \times q^{2}\\\\q^{2} & = & \dfrac{4.0}{2.25 \times 10^{9}\text{ C$^{-2}$}}\\\\& = & 1.78 \times 10^{-9} \text{ C}^{2}\\q & = & 4.2 \times 10^{-5} \text{ C}\\& = & 42\, \mu \text{C}\\\end{array}\\\text{Each charge has a value of $\large \boxed{\mathbf{42\, \mu }\textbf{C}}$}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Brcl%7D%5Ctext%7B4.0%20N%7D%26%20%3D%20%26%208.988%20%5Ctimes%2010%5E%7B9%7D%5Ctext%7B%20N%24%5Ccdot%24m%24%5E%7B2%7D%24C%24%5E%7B-2%7D%24%7D%20%5Ctimes%20%5Cdfrac%7Bq%5E%7B2%7D%7D%7B%5Ctext%7B%282.0%20m%29%7D%5E%7B2%7D%7D%5C%5C%5C%5C4.0%20%26%20%3D%20%26%202.25%20%5Ctimes%2010%5E%7B9%7D%5Ctext%7B%20C%24%5E%7B-2%7D%24%7D%20%5Ctimes%20q%5E%7B2%7D%5C%5C%5C%5Cq%5E%7B2%7D%20%26%20%3D%20%26%20%5Cdfrac%7B4.0%7D%7B2.25%20%5Ctimes%2010%5E%7B9%7D%5Ctext%7B%20C%24%5E%7B-2%7D%24%7D%7D%5C%5C%5C%5C%26%20%3D%20%26%201.78%20%5Ctimes%2010%5E%7B-9%7D%20%5Ctext%7B%20C%7D%5E%7B2%7D%5C%5Cq%20%26%20%3D%20%26%204.2%20%5Ctimes%2010%5E%7B-5%7D%20%5Ctext%7B%20C%7D%5C%5C%26%20%3D%20%26%2042%5C%2C%20%5Cmu%20%5Ctext%7BC%7D%5C%5C%5Cend%7Barray%7D%5C%5C%5Ctext%7BEach%20charge%20has%20a%20value%20of%20%24%5Clarge%20%5Cboxed%7B%5Cmathbf%7B42%5C%2C%20%5Cmu%20%7D%5Ctextbf%7BC%7D%7D%24%7D)
Other terrestrial planets have more extreme temperatures mainly because of their atmospheres
Explanation:
for example the atmosphere of Venus is composed mainly of carbon dioxide, this carbon dioxide traps the heat or energy from the sun and makes the planet have higher temperatures. where on mars the atmosphere is very thin so it takes in lots of heat and doesn't keep it in very well so it gets very hot and very cold
Answer:
The third stage of parturition is called " after-birth".
Explanation: