Biology, 14.07.2019 14:30 brittanydeanlen
In an experiment to determine the acceleration due to gravity, one student drops a tennis ball out of the school’s third floor window. another student starts a timer when the first student lets go and stops the timer when the ball hits the ground. they conduct the experiment once and record the data. is this a valid experiment, why or why not? a. no, it is not valid because the short distance means there will be a lot of error due to the student’s reaction time. b. no, it is not valid because they are only dropping one item. c. yes it is valid. d. no, it is not valid because they did not have any repeat trials.
Answers: 1
Biology, 22.06.2019 06:00, ajbrock1004
Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun
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Biology, 22.06.2019 08:40, Josephzaz
Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of
Answers: 1
Biology, 22.06.2019 09:00, michael3592
Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f
Answers: 2
In an experiment to determine the acceleration due to gravity, one student drops a tennis ball out o...
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