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Naddika [18.5K]
3 years ago
9

9. Which of the following statements is true about scientific theories?

Physics
2 answers:
AleksAgata [21]3 years ago
6 0
I think the correct answer from the choices listed above is option D. Scientific theories summarize patterns found in nature. Although, the statement scientific theories are never proven is somewhat true. They are either disproved or they are never disproved. Hope this answers the question.
pochemuha3 years ago
3 0

Correct answer choice is :


B) Scientific theories are never proven.


Explanation:


A scientific theory is a well-substantiated description of some features of the natural world, based on a body of evidence that has been frequently authenticated through investigation and experimentation. Such fact-supported hypotheses are not conclusions but authentic statements of the actual world. A scientific theory may be changed and eventually discarded if it cannot be done to fit the new conclusions in such conditions, a more precise theory is then needed.

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A 2.4-kg ball falling vertically hits the floor with a speed of 2.5 m/s and rebounds with a speed of 1.5 m/s. What is the magnit
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Answer:

9.6 Ns

Explanation:

Note: From newton's second law of motion,

Impulse = change in momentum

I = m(v-u).................. Equation 1

Where I = impulse, m = mass of the ball, v = final velocity, u = initial velocity.

Given: m = 2.4 kg, v = 2.5 m/s, u = -1.5 m/s (rebounds)

Substitute into equation 1

I = 2.4[2.5-(-1.5)]

I = 2.4(2.5+1.5)

I = 2.4(4)

I = 9.6 Ns

4 0
3 years ago
Identify the independent, dependent, and constant variables for different experiments.
diamong [38]

ANSWER:

IV, Type of dish detergent. DV, height of foam. CV, type of container, amount of water in container, temperature of water, time the container is agitated.

Explanation:

Independent variable(IV)- what you change during the experiment.

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Constant variables(CV)- things that do not change in order to isolate the tested variables as much as possible.

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3 years ago
In a clear cup there are three substances. Their densities are 3, 1, and 2. From top of the cup to the bottom, what would the or
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Explanation:

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The truck went 1,200 miles
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