Sound travels at a rate of 340 m/s in all directions through air. matt rings a very loud bell at one location, and steve hears it some time later at his location 450 meters to the south. how long did it take the sound to travel from the bell to steve's location?
0.76 s
1.3 s
150,000 s
790 s

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg