The uniform beam shown in the figure weighs 500 N and supports a 700N rope. Find 1) the tension in the rope 2) the component of the force at hinge
3) the resultant force at hinge

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm