A 2 kg hammer is 0.4 m above the ground. What is its PE?

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

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Which of the following is not a physical property of mattera. melting pointb. heat of combustionc. viscosityd. boiling point