A standing wave is established in a 557-cm-long string fixed at both ends. The string vibrates in four segments when driven at 275 hz.

A5 foot by 5 foot box culvert is buried 6 feet beneath the surface of the ground. a crosssection of this very long culvert (into and out of the page) is illustrated below. assume that the soil in which the culvert is buried has the following properties: jt = 120 pcf, w = 12%, ko = 0.50, ka = 0.33, and kp = 3.00. calculate the total horizontal force per unit length of culvert (fh) felt on one of the vertical faces of the culvert.

Which describes increasing the efficiency of energy resource

Language is not the only way that humans communicate. describe how we use sound, touch, chemicals, and sight to communicate. need answer asap