Which standing wave has exactly 2 anti-nodes

Define conservation of energy in your own words be as specific as you can

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.