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marin [14]
3 years ago
9

Scientists review the work of other scientists to. . A) ensure the results are in agreement with accepted scientific beliefs. .

B) guarantee federal funding by supporting each other's work. . C) keep the science community better informed. . D) validate the results and check the evidence's reliability
Physics
2 answers:
Masteriza [31]3 years ago
7 0
Scientists review the work of other scientists to validate the results and check the evidence's reliability. The correct option among all the options that are given in the question is the fourth option or the last option or option "D". I hope that this is the answer that has come to your desired help.
Vsevolod [243]3 years ago
7 0

from what I see the answer is D my dude:)

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A worker on the roof of a house drops his 0.46 kg hammer, which slides down the roof at constant speed of 9.88 m/s. The roof mak
nekit [7.7K]

Answer:

The horizontal distance travelled in that time lapse is 12.94 m

Explanation:

In order to solve this problem, we'll need:

  1. The horizontal speed
  2. the time the hammer takes to fall from the roof to the ground

At the lowest point of the roof, the hammer has a 9.88 m/s speed that makes an angle of 27° with the horizontal, so we can calculate the horizontal and vertical speed with trigonometry. If we take right as x positive and down as y positive we get

v_{x}=v*cos(27)=9.88 m/s *cos(27)=8.80 m/s \\v_{y}=v*sen(27)=9.88 m/s *sen(27)=4.49 m/s

Now, we make two movement equation as we have a URM (no acceleration) in x and an ARM (gravity as acceleration) in y. We will wisely pick the lowest point of the roof as the origin of coordinates

x(t)=8.8 m/s *t

y(t)=4.49m/s*t+\frac{1}{2}*9.8m/s^{2}*t^{2}

Now we calculate the time the hammer takes to get to the floor

17.1m=4.49m/s*t+\frac{1}{2}*9.8m/s^{2}*t^{2}\\t=1.47s or t=-2.38s

Now, we keep the positive time result and calculate the horizontal distance travelled

x(1.47s)=8.8m/s*1.47s=12.94m

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3 years ago
Which of the following is equivalent to 4.5 m?
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the answer is pressure

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4) It brings transformation in the adapting kind.

Hope this helps you☺️☺️

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2 years ago
If asked to describe a wave, you could say waves are the
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Good evening Carolina


You could say waves are the continuous transmission of energy from one location to the next.


I hope that's help:)


3 0
2 years ago
Read 2 more answers
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