Select ALL the correct definitions of the PERIOD of a standing wave. E.g., if B and D are true and the rest are false, enter BD.
The time it takes an antinode to go from y(t) = +y0 through y(t) = −y0 back to y(t) = +y0.
The time it takes a point on the slinky to go from maximum displacement y(x,t) = y1 through y(x,t) = −y1 back to y(x,t) = y1.
The time for n complete oscillations divided by n.
Twice the time for an antinode to go from y(t) = +y0 to y(t) = −y0.