An airplane is traveling 981 m/s at 34.4° degrees north of west when a wind starts to blow. The velocity of the wind is 120 m/s and it is blowing toward 22.1° east of north. What is the resultant direction of the plane, assuming due east is 0 degrees, due north is 90 degrees, due west is 180 degrees and due south is 270 degrees? (Remember, no units for degrees.)

most voltage drop calculators want the distance between the source and destination. then internally, they double it so both the source and return wires are calculated. but you need to know which distance the calculator uses so you're not half of what you should be or double what you should be.

most circuit breakers will not take a #6 directly, so the electrician will have to splice on a smaller pigtail. you also have to upsize the grounding wire when you upsized the ungrounded (hot) wire (see note in 250.122). this will preclude using most cable assemblies, as a cable with #6 copper will most likely only have a #10 grounding conductor. you need a #6 grounding conductor if the circuit is 20a. a #8 cable is no better, as it will have a #10 grounding conductor too. but most 20a breakers will take a #8 directly.

in your related post, you didn't say what type of load this is. if it is a light or heater, voltage drop won't be a big issue. if this is a motor, the current needs are huge at startup and the voltage drop can pose a problem. if this is a motor, knowing if the motor is under much load during startup will answer the voltage drop effect (a saw is easier to start than a compressor).

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered