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julia-pushkina [17]
3 years ago
9

What is defined as the isolation and reduction of variables in an experiment in order to understand the impact of a specific var

iable or variables on the outcome of the study?
Physics
1 answer:
ehidna [41]3 years ago
7 0

aisnhsjdjxbxbxhxbxjx

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A penny is dropped from the top of a tower. It hits the ground below after 2.5 s. How tall was the tower?
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C. 30.6m

Explanation:

To find the height of the tower, we are to use Newtons law of motion to solve this problem. Since the penny is falling from the top of the tower, it is acted by the acceleration due to gravity. The formula to be used is:

H=ut+\frac{1}{2}gt^2

Where H is the height of the tower, t is the time taken to hit the ground, u is the initial velocity and g is the acceleration due to gravity.

Given that, t = 2.5 s, g =9.8 m/s², u = 0 m/s (at the top of tower)

H=ut+\frac{1}{2}gt^2\\\\H=0(2.5)+ \frac{1}{2}(9.8)(2.5)^2\\\\H=30.6\ m

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3 years ago
How much would you have to eat for your appendix to explode ? I ate so much on thanksgiving and i need to know i’m very scared
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I don't think your appendix can explode because you ate too much honestly. It's not even possible to eat so much that your appendix explodes, and if you're feeling any pain it definitely isn't because your appendix is about to explode, believe me. Also you could just type it into the internet, that'd be a much faster solution.

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The fuzzy cloud around the nucleus is called the
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It's number three on your worksheet. ;)
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A soft, silvery-white metal combines with a yellow gas to form a white crystal-like solid. What can be said about this change? T
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