Answer:
R1 + R2 = R = 12 for resistors in series - so R1 = R2 if they are identical
2 R1 = 12 and R1 = R2 = 6 ohms
1 / R = 1 / R1 + 1 / R2 for resistors in parallel
R = R1 * R2 / (R1 + R2) = 6 * 6 / (6 + 6) = 3
The equivalent resistance would be 3 ohms if connected in parallel
Anything that can be dissolved/mixed into a solvent. Sugar, salt, acetic acid, etc
A) Water freezing
This is called the process of turning water as a liquid to its solid form which is ice.
Ice is almost together as one unlike liquid. This is why the molecules are more orderly.
The process of freezing is exothermic which means the heat has to be removed in the process.
Answer:
0.75 second
Explanation:
The equation is
![h = 16t^{2}+64 t + 16](https://tex.z-dn.net/?f=h%20%3D%2016t%5E%7B2%7D%2B64%20t%20%2B%2016)
Let t be the time when it is at 73 feet. Substitute, h = 73 in the above equation and then find the value of t.
![73 = 16t^{2}+64 t + 16](https://tex.z-dn.net/?f=73%20%3D%2016t%5E%7B2%7D%2B64%20t%20%2B%2016)
![16t^{2}+64 t-57=0](https://tex.z-dn.net/?f=16t%5E%7B2%7D%2B64%20t-57%3D0)
![t=\frac{-64\pm \sqrt{64^{2}+4\times 16\times 57}}{2\times 16}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-64%5Cpm%20%5Csqrt%7B64%5E%7B2%7D%2B4%5Ctimes%2016%5Ctimes%2057%7D%7D%7B2%5Ctimes%2016%7D)
![t=\frac{-64\pm 88}{32}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7B-64%5Cpm%2088%7D%7B32%7D)
Take positive sign
t = 0.75 second