1 . a solenoid with a core of magnetic material electromagnet
2 . a coil of current-carrying wire which produces a magnetic field electromagnetic induction
3 . a device for detecting small amounts of current galvanometer
4 . the creation of an electric current in a circuit exposed to a changing magnetic field solenoid

12 drag each label to the correct category. decide whether each statement describes mass or weight. measured in newtons measured in kilograms does not change when gravity changes === a gravitational force changes when gravity changes the amount of matter in something mass weight

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

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