An airplane files at an altitude of 36000 km and is traveling at a velocity of 300.0 kn/h to the north but the tailwind is 20.0 km/h

What are the phases shown in a and d called?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.