Which has the most inertia? question 2 options: a) a sports car going 210 mph around the track b) your pet dog/cat/horse/bird/fish moving at their fastest speed c) a cruise ship docked in a port d) a pebble travelling through space at 90,500,000 km/s

What produces light and all other electromagnetic waves? a) the photoelectric phenomena b) heated metals c) charged particles d) radioactive samples (pls explain if you can : )

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

Explain earth's motion, using the terms "precession" and "rotation" in your answer.