What is the period of a pendulum that is attached to a 25.5 cm long rod in an antique grandfather clock?

What type of nuclear decay causes the atomic number of an element to increase by 1?

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

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2