Answer:
The type of material of which the resistor is made.
The length of the resistor.
The thickness of the resistor.
The temperature of the conductor.
Answer:
![y = 17.04 ft](https://tex.z-dn.net/?f=y%20%3D%2017.04%20ft)
Explanation:
Since the cable touches the road at the mid point of two towers
so here we have vertex at that mid point taken to be origin
now the maximum height on the either side is given as
![y = 180 ft](https://tex.z-dn.net/?f=y%20%3D%20180%20ft)
horizontal distance of the tower from mid point is given as
![x = \frac{1300}{2} = 650 ft](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B1300%7D%7B2%7D%20%3D%20650%20ft)
now from the equation of parabola we have
![y = k x^2](https://tex.z-dn.net/?f=y%20%3D%20k%20x%5E2)
![180 = k(650^2)](https://tex.z-dn.net/?f=180%20%3D%20k%28650%5E2%29)
![k = 4.26 \times 10^{-4}](https://tex.z-dn.net/?f=k%20%3D%204.26%20%5Ctimes%2010%5E%7B-4%7D)
now we have
![y = (4.26 \times 10^{-4})x^2](https://tex.z-dn.net/?f=y%20%3D%20%284.26%20%5Ctimes%2010%5E%7B-4%7D%29x%5E2)
now we need to find the height at distance of 200 ft from center
so we have
![y = (4.26 \times 10^{-4})(200^2)](https://tex.z-dn.net/?f=y%20%3D%20%284.26%20%5Ctimes%2010%5E%7B-4%7D%29%28200%5E2%29)
![y = 17.04 ft](https://tex.z-dn.net/?f=y%20%3D%2017.04%20ft)
Answer:
A) Have more coils of wire
F) Use a more powerful battery
static electricity and friction