Biology

Biology, 16.10.2019 15:30, bdjxoanbcisnkz

In a controlled experiment a scientist is studing how long it takes parachutes of different sizes to fall to the ground what is the maipulated variable

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Biology, 25.07.2019 23:00, Alayna1037

Ascientist performs a controlled experiment. this means that select one: a. the experiment is repeated many times to ensure that the results are accurate. b. the experiment proceeds at a slow pace to guarantee that the scientist can carefully observe all reactions and process all experimental data. c. two versions of the experiment are conducted, one differing from the other by only a single variable. d. one experiment is performed, but the scientist controls the variables.

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Mathematics, 31.08.2019 12:30, erica437

Atoy rocket was launched from the ground. the function f(x) = -16x² + 160x shows the height of the rocket f(x), in feet, from the ground at time x seconds. what is the axis of symmetry of the graph of f(x), and what does it represent? -- a) x = 10; it takes 10 seconds to reach the maximum height and 10 seconds to fall back to the ground b) x = 10; it takes 10 seconds to reach the maximum height and 20 seconds to fall back to the ground c) x = 5; it takes 5 seconds to reach the maximum height and 10 seconds to fall back to the ground d) x = 5; it takes 5 seconds to reach the maximum height and 5 seconds to fall back to the ground -- i was absent for a week and we only touched up on this one day when i got back. i really appreciate any and all given. ranking brianliest to the one who can give step by step instruction included in their answer.

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Biology, 29.09.2019 02:30, gg68814

Ahumor piece in a reputable medical journal notes that people can't tell for sure whether parachutes are safe and effective because there has never been a properly randomized, double-blind, placebo-controlled study of parachute effectiveness in skydiving. suppose a researcher were designing such a study. complete parts 1 and 2 below. 1)what is the factor in this experiment? a. jumping with or without a parachute b. the parachutes c. how the parachutes are distributed to the skydivers d. the skydivers 2) what experimental units should be used? a. different brands of parachutes b. airplanes c. volunteer skydivers d. the research team

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Biology, 30.09.2019 08:00, anna4060

In a controlled experiment a scientist is studying how long it takes a parachute of different sizes to fall to the ground what is the manipulated variable

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