a ball is equipped with a speedometer and launched straight upward. The speedometer reading three seconds after launch is 20 m/s ; the ball is moving up . At what approximate times would the ball be moving downward and display the following speedometer readings is 10m/s and 20 m/s?

Not all tiles will be usedidentify the element present in each star based on the gaps observed in wavelengths of its light refer to this table containing absorption wavelengths (in nm) of several different elements the table ishelium 447, 502 ,587 ,668carbon 427 ,515, 600 ,678sulfur 425, 565, 639, 675xenon 484, 590, 687calcium 429 ,527, 593, 645silver 421 ,521, 662

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f