When making an offset in conduit, if the spacing between marks is double the offset depth, you know that the offset angle is?

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

where’s the list ? the question is incomplete

i believe the answer is a hope it and is correct