Arifle is aimed horizontally at a target 55.0 m away. the bullet hits the target 2.90 cm below the aim point. you may want to review (pages 86 - 90) . part a what was the bullet's flight time? express your answer with the appropriate units. nothing nothing request answer part b what was the bullet's speed as it left the barrel? express your answer with the appropriate units. nothing nothing request answer

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth