Adiver on a diving board is undergoing simple harmonic motion. her mass is 55.0 kg and the period of her motion is 0.800 s. the next diver is a male whose period of simple harmonic oscillation is 1.05 s. what is his mass if the mass of the board is negligible?

Most energy in an ecosystem comes originally from_

An object's buoyant force and weight mean the same thing.a. trueb. false

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.