<span>
Gravity is pushing you down on the earth while the friction from the ground is pushing you up. Those are the two frictions you must overcome when walking.
</span>
Well i really need to see the choices but i think you mean neon
red goes to red, black goes to white, yellow goes to green, blue goes to blue.
In practice, something that follows a very predictable pattern can be used as a time standard. This include things like radioactive decay, planetary orbit, and the speed of light, among others.
Total resistance= 7.75+15.5+21.7=44.95
Current = 15V/44.95=0.334A