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Zolol [24]
4 years ago
8

Sally and Maria hypothesized that earthworms lived only in dark, damp places. They measured a one-meter square in a shady spot n

ear a stream. They dug through the soil and collected earthworms. They collected 43 worms. They repeated the experiment in several locations, sunny and dry included. They found the most worms in the shady, damp plot near the stream. Several other groups of science students carried out the same experiment and got similar results. This is an example of
A) bias.
B) repetition.
C) replication.
D) validity.
Physics
2 answers:
Reptile [31]4 years ago
7 0
The answer is c replication
Alex777 [14]4 years ago
5 0
Hello,

Your brainliest answer would be:

C. Replication

Plz mark me brainliest!

I need two more brainliest until expert!

Hope this helps!
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A ball thrown by Ginger is moving upward through the air. Diagram A shows a box with a downward arrow. Diagram B shows a box wit
vichka [17]

As the ball is moving in air as well as we have to neglect the friction force on it

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So the correct FBD will contain only one force and that force must be vertically downwards

So here correct answer must be

<em>Diagram A shows a box with a downward arrow. </em>

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3 years ago
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3 years ago
The loudness of a sound is determined by the __________, or height, of the sound wave.
NISA [10]

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How does an air mattress protect a stunt person landing on the ground after a stunt?
Fudgin [204]

Answer:

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3 years ago
Arrange the objects in order from least to greatest potential energy. Assume that gravity is constant. (Use PE = m × g × h.)
yawa3891 [41]

Answer:The objects in order from least to greatest potential energy:

3<1<4<2

Explanation:

1. Potential energy of a 15-kilogram stone  found at a height of  3 meters:

mgh=15 kg\times 9.8 m/s^2\times 3 m=441 J

2. Potential energy 10 kilograms of water  stored at a height of  9 meters:

mgh=10 kg\times 9.8 m/s^2\times 9 m=882 J

3. Potential energy 1-kilogram ball located  20 meters in the air:

mgh=1 kg\times 9.8 m/s^2\times 20 m=196 J

4. Potential energy box of books weighing  25 kilograms placed on  a shelf 2 meters high:

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The objects in order from least to greatest potential energy:

3<1<4<2

8 0
3 years ago
Read 2 more answers
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