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tatiyna
3 years ago
9

Scientists use supporting evidence to create an explanation. Explain why using evidence to support your explanations is a good p

ractice.
Physics
1 answer:
Anettt [7]3 years ago
7 0

Answer:

Scientific evidence relies on data, and it is crucial for researchers to ensure that the data they collect is representative of the “true” situation. This means using proved or appropriate ways of collecting and analyzing the data and ensuring the research is conducted ethically and safely.

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Which of the following quantities would be acceptable representations of weight? Check all that apply.
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Only 12 lb and 1600 kN .

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Physics Question - Matching
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A mass m at the end of a spring vibrates with a frequency
Wittaler [7]

Answer:

m = 0.59 kg.

Explanation:

First, we need to find the relation between the frequency and mass on a spring.

The Hooke's law states that

F = -kx

And Newton's Second Law also states that

F = ma = m\frac{d^2x}{dt^2}

Combining two equations yields

a = -\frac{k}{m}x

The term that determines the proportionality between acceleration and position is defined as angular frequency, ω.

\omega = \sqrt{\frac{k}{m}}

And given that ω = 2πf

the relation between frequency and mass becomes

f = \frac{1}{2\pi}\sqrt{\frac{k}{m}}.

Let's apply this to the variables in the question.

0.88 = \frac{1}{2\pi}\sqrt{\frac{k}{m}}\\0.60 = \frac{1}{2\pi}\sqrt{\frac{k}{m+0.68}}\\\frac{0.88}{0.60} = \frac{\frac{1}{2\pi}\sqrt{\frac{k}{m}}}{\frac{1}{2\pi}\sqrt{\frac{k}{m+0.68}}}\\1.4667 = \frac{\sqrt{m+0.68}}{\sqrt{m}}\\2.15m = m + 0.68\\1.15m = 0.68\\m = 0.59~kg

6 0
3 years ago
What characteristic of sound is most closely related to its frequency?
Andre45 [30]

Answer:

The loudness of sound is most closely related to

The pressure within a sound wave determines the loudness of the sound. In this lesson, learn how to calculate the sound pressure level of a sound wave and what this measurement represents.

Explanation:

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3 years ago
Baby Sadie gets a new rubber ducky for her first birthday! She sees that it floats in the bathtub during bath time. What do you
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The rubber ducky was able to float because it’s density was less than the water. Water has a density of 1, meaning the rubber ducky must have a density lower than 1.
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