A dust particle floats in front of a silent loudspeaker as shown in the figure. The loudspeaker is turned on and plays a constant low frequency note.

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Explain earth's motion, using the terms "precession" and "rotation" in your answer.

Asatellite component is in the shape of a cube with 10cm edges, has an evenly distributed mass of 2 kg and one bolt hole at each of four corners. if the maximum predicted random vibration environment is 10 grms, what bolt size would be a good choice for restraint? what other factors might drive bolt size besides force/stress?