A uniform rod of mass m and length l can pivot freely (ignore friction) about a hinge attached to a wall. the rod is held horizontally and then released. assume that the force of gravity acts at the center of mass of the rod. a. b. what is the angular acceleration of the rod the moment it's released

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Aheavy piece of hanging sculpture is suspended by a90-cm-long, 5.0 g steel wire. when the wind blows hard, the wire hums at its fundamental frequency of 80hz. what is the mass of the sculpture?