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2 years ago

Choose the statements that correctly describe a scientific theory. Select all that apply.

Physics

1 answer:

Basile [38]2 years ago

4 0

The statement that correctly describes a scientific theory is option b.

A scientific theory is a thorough justification for a certain phenomenon in the natural world that is based on a body of data that has been repeatedly confirmed via observation and experiment. These concepts are accurate explanations of reality rather than just "guesses." It is possible to test scientific hypotheses and produce predictions that can be refuted.
Option a is incorrect because a scientific theory is supported by data and evidence.
Option c is incorrect because a scientific theory is not based on opinions but rather facts.
Option d is incorrect because a scientific theory is not likely to change over time with new incoming data.

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A toddler pushed a 4-kg toy car at a constant speed against a ground frictional force of 8 N.

Soloha48 [4]

Correct me if I’m wrong but I think it’s C

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3 years ago

A vegatable garden is 12 meters long by 7 meters wide.It is home to 168 mice.What is the population density of the mice?

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4 years ago

A person standing 1.20 m from a portable speaker hears its sound at an intensity of 5.50 ✕ 10−3 W/m2. HINT (a) Find the correspo

iris [78.8K]

Answer:

PART A)

L = 97.4 dB

PART B)

$I = 6.11 \times 10^{-6} W/m^2$

PART C)

L = 67.9 dB

Explanation:

PART A)

level of sound is given as

$L = 10 Log\frac{I}{I_o}$

now we have

$L = 10 Log\frac{5.50\times 10^{-3}}{10^{-12}}$

$L = 97.4 dB$

PART B)

Since source is a spherical source

so here the intensity of sound is inversely depends on the square of the distance from the source

$\frac{I_2}{I_1} = \frac{r_1^2}{r_2^2}$

$\frac{I_2}{5.50 \times 10^-3} = \frac{1.20^2}{36^2}$

$I_2 = 6.11 \times 10^{-6} W/m^2$

PART C)

level of sound is given as

$L = 10 Log\frac{I}{I_o}$

now we have

$L = 10 Log\frac{6.11\times 10^{-6}}{10^{-12}}$

$L = 67.9 dB$

3 0

3 years ago

mario62 [17]

Answer:

An increase in air temperature because of its compression.

Explanation:

The Gay-Lussac's Law states that a gas pressure is directly proportional to its temperature in an enclosed system to constant volume.

$P = kT$

<em>where P: is the gas pressure, T: is the gas temperature and k: is a constant.</em>

Therefore, due to Gay-Lussac's Law, when the plunger is pushed down very rapidly, the pressure of the air increase, which leads to its temperature increase. That is why cotton flashes and burns.

I hope it helps you!

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3 years ago

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Nimfa-mama [501]

answer = 33.4 net force.

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3 years ago