A 20kg table top is to be supported by four 2kg legs. Adjacent legs are held together by a horizontal 1kg strut at a height of 10cm above the floor. The force exerted by each leg on the floor will be approximately?

Awave is produced in a slinky as shown. what is the direction of the slinky wire at point p as the waves travel through this point?

Which type of circuit is becoming more common in residential electrical design and construction? a. hazardous-area circuit b. three-phase circuit c. 480-volt circuit d. communication circuit

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