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Vlad1618 [11]
2 years ago
13

Scientific knowledge is both long lasting and open to change. In your own words, explain why scientific knowledge should be re-e

xamined and re-tested from time to time. Include two examples that will support your response.
Physics
1 answer:
Novay_Z [31]2 years ago
8 0
Scientific knowledge<span> is </span>both<span> durable and robust, but scientific knowledge is also </span>open<span> to </span>change. Because of the fact that it is<span> often examined and </span>re-examined by new investigations, scientific knowledge can change.N<span>ew discoveries are being made all the time.</span>
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A car tire rotates with an average angular speed of 32 rad/s. In what time interval will the tire rotate 3.5 times? Answer in un
stiks02 [169]

Answer:

\Delta t = 0.687\ s

Explanation:

given,

Angular speed of the tire = 32 rad/s

Displacement of the wheel = 3.5 rev

Δ θ = 3.5 x 2 π

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now,

Time interval of the car to rotate 7π rad

using equation

\omega_{avg} =\dfrac{\Delta \theta}{\Delta t}

\Delta t=\dfrac{7\pi}{32}

\Delta t = 0.687\ s

Time taken to rotate 3.5 times is equal to 0.687 s.

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2 years ago
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Lina20 [59]

Answer:When the length of a string is changed, it will vibrate with a different frequency.Shorter strings have higher frequency and therefore higher pitch.

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2 years ago
A certain lightbulb has a tungsten filament with a resistance of 26 Ω when cold and 170 Ω when hot. If the equation R = R0 [1 +
iris [78.8K]

Answer:

Explanation: The equation that relates resistance of tungsten at different temperatures is as follows

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Putting the values

170 = 26 [1 + .0045 ∆T]

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Answer:

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Snezhnost [94]
The answer is C. Newton
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Read 2 more answers
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